CVE-2023-52339: matroska libebml Integer Overflow or Wraparound
Vulnerability summary
CVE-2023-52339 is a medium (CVSS 6.5) Integer Overflow or Wraparound vulnerability in matroska libebml. EPSS estimates a 1.10% chance of exploitation in the next 30 days, higher than 65.6% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 12-01-2024PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.10%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.10% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundLibebml
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- libebml< 1.4.5-r0
Debian1 product
- libebml< 1.4.2-1+deb11u1 | < 1.4.4-1+deb12u1 | < 1.4.5-1
Matroska1 product
- libebml< 1.4.5
Ubuntu1 product
- libebml< 1.3.3-1ubuntu0.1+esm1 | < 1.3.5-2ubuntu0.1+esm1 | < 1.3.10-1ubuntu0.1~esm1 | < 1.4.2-2ubuntu0.1~esm1
4 vendors · 4 products
References
15 links- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
