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Fencer Vulns
high 7.5

CVE-2025-27598 json

Out-of-bounds Write in SixLabors ImageSharp

published 2025-03-06 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-6253 , GHSA-2cmq-823j-5qj8

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

ImageSharp is a 2D graphics API. An Out-of-bounds Write vulnerability has been found in the ImageSharp gif decoder, allowing attackers to cause a crash using a specially crafted gif. This can potentially lead to denial of service. The problem has been patched. All users are advised to upgrade to v3.1.7 or v2.1.10.

Patch / fix

  • nuget SixLabors.ImageSharp 2.1.10, 3.1.7
  • sixlabors imagesharp 2.1.10, 3.1.7

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/SixLabors/ImageSharp/issues/2859 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget SixLabors.ImageSharp
>=3.0.0, <3.1.7
<2.1.10
3.1.7
2.1.10

Affected products

  • SixLabors ImageSharp

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.