CVE-2023-52339
MEDIUM
6.5
CVSS Score
Published: January 12, 2024 at 12:00 AM UTC
Updated: June 17, 2026 at 06:42 AM UTC
1 product affected across 1 vendorLibebml
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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
PoC
Description
In libebml before 1.4.5, an integer overflow in MemIOCallback.cpp can occur when reading or writing. It may result in buffer overflows.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.4.5
Affected range stops below 1.4.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/Matroska-Org/libebml/issues/147
- https://github.com/Matroska-Org/libebml/pull/148
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BJUXVOIRWPP7OFYUKQZDNJTSLWCPIZBH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNANFT4P6KL4WDQ3TV6QQ44NSC7WKLAB/
References (9)
ExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://github.com/Matroska-Org/libebml/issues/147Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/01/msg00016.htmlSource: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/[email protected]/message/BJUXVOIRWPP7OFYUKQZDNJTSLWCPIZBH/SSVC — Action Prioritization
SSVCPoCNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-190
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