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Fencer Vulns
medium 4.0

CVE-2023-5520 json

Out-of-bounds Read in gpac/gpac

published 2023-10-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57833

cvss
4.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Patch / fix

  • gpac gpac/gpac 2.2.2
  • gpac gpac 2.2.2
  • gpac Ubuntu Pro 22.04 LTS 2.0.0+dfsg1-2ubuntu0.1~esm2
  • gpac Ubuntu Pro 24.04 LTS 2.2.1+dfsg1-3.1ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2023-5520

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/681e42d0-18d4-4ebc-aba0-c5b0f77ac74a referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 4.0 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

  • gpac gpac/gpac
  • gpac gpac

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.