CVE-2020-36138 Null dereference in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2020-36138 and fix it if it is affected.
What it is: CVE-2020-36138 is a high-severity vulnerability in Ffmpeg Ffmpeg, published on 11 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-36138 in the wild and no public exploit code.
Affected product: Ffmpeg Ffmpeg. 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-2020-36138/ (Markdown: https://insights.sbomify.com/CVE-2020-36138/index.md)
Remote attackers can cause a denial of service via a null pointer dereference in FFmpeg's TIFF decoder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-36138?
CVE-2020-36138 is a high-severity vulnerability in Ffmpeg Ffmpeg, published on 11 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in decode_frame in libavcodec/tiff.c in FFmpeg version 4.3, allows remote attackers to cause a denial of service (DoS).
Weakness: CWE-476
Which versions are affected by CVE-2020-36138?
It affects 1 product.
Products include Ffmpeg Ffmpeg.
How do I fix CVE-2020-36138?
Upgrade to a fixed version.
Is CVE-2020-36138 being exploited?
There is no known exploitation of CVE-2020-36138 in the wild and no public exploit code.
Other vulnerabilities in Ffmpeg Ffmpeg
Sources
Also known as GHSA-wcq2-h3fq-c7cf, JLSEC-2025-124.