CVE-2022-40304
HIGH
7.8
CVSS Score
Published: November 23, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 06:17 PM UTC
18 products affected across 4 vendorsmacOSiPhone OSiPadOS· also runs on 5 platforms
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Severity
HIGH7.8
Exploit prediction
EPSS 6%
SSVC
No known exploit
Description
An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versionsv < 15.7.2
Affected range stops below 15.7.2, so it looks safe — our inference, not a vendor statement
All versionsv < 15.7.2
Affected range stops below 15.7.2, so it looks safe — our inference, not a vendor statement
All versions11.0 ≤ v < 11.7.212.0 ≤ v < 12.6.2
Affected range stops below 11.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.6.2, so it looks safe — our inference, not a vendor statement
All versionsv < 16.2
Affected range stops below 16.2, so it looks safe — our inference, not a vendor statement
All versionsv < 9.2
Affected range stops below 9.2, so it looks safe — our inference, not a vendor statement
All versions
All versions
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (20)
Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/Dec/21Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/Dec/24Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/Dec/25Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2022/Dec/26PatchThird Party Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/libxml2/-/commit/1b41ec4e9433b05bb0376be4725804c54ef1d80bRelease NotesThird Party Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/libxml2/-/tagsPatchRelease NotesThird Party Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-415
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