CVE-2025-27598 json
Out-of-bounds Write in SixLabors ImageSharp
published last yr. modified 4mo 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
- github.com/SixLabors/ImageSharp#2890 pull request
Is CVE-2025-27598 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).
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
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/SixLabors/ImageSharp/pull/2890
web, issue-tracking, patch
-
github.com
/SixLabors/ImageSharp/issues/2859
exploit, web, issue-tracking
-
github.com
/SixLabors/ImageSharp/security/advisories/GHSA-2cmq-823j-5qj8
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-27598
advisory
-
github.com
/SixLabors/ImageSharp
package
Sources
- CVE List CVE-2025-27598
- GitHub Advisory GHSA-2cmq-823j-5qj8
- NVD CVE-2025-27598
Fencer Intel 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.