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

> A local buffer overflow in LibTIFF's thumbnail tool allows attackers to execute arbitrary code or cause denial of service.

- **Severity:** Medium 4.8 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Jul 2025
- **Updated:** 28 Jul 2025
- **Also known as:** AZL-65970, AZL-65978, BELL-CVE-2025-8177, CLSA-2025-1764886460, DEBIAN-CVE-2025-8177, ECHO-9fcc-05ad-7b54, GHSA-w743-578r-x56m, JLSEC-2025-318, MINI-wvrf-gjv4-j868, OESA-2025-1920, OESA-2025-1921, OESA-2025-1922, ROOT-OS-ALPINE-320-CVE-2025-8177, ROOT-OS-DEBIAN-11-CVE-2025-8177, ROOT-OS-DEBIAN-12-CVE-2025-8177, UBUNTU-CVE-2025-8177

## What is CVE-2025-8177?

CVE-2025-8177 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 26 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-8177?

It affects 1 product.


Products: Libtiff Libtiff.

## How do I fix CVE-2025-8177?

Apply the vendor's patch.

## Is CVE-2025-8177 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8177 exists.

## Other vulnerabilities in Libtiff Libtiff

- [CVE-2004-1308](https://insights.sbomify.com/CVE-2004-1308/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0929](https://insights.sbomify.com/CVE-2004-0929/): Memory corruption in n/a (critical 10.0)
- [CVE-2025-61144](https://insights.sbomify.com/CVE-2025-61144/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-9533](https://insights.sbomify.com/CVE-2016-9533/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-9534](https://insights.sbomify.com/CVE-2016-9534/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8177 and fix it if it is affected.

What it is: CVE-2025-8177 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 26 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8177 exists.

Affected product: Libtiff Libtiff. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-8177/ (Markdown: https://insights.sbomify.com/CVE-2025-8177/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8177
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8177
- OSV: https://osv.dev/vulnerability/CVE-2025-8177

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8177/
Summaries are generated and may contain mistakes; the official description above is the record.