CVE-2025-53817 GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream
A null pointer dereference in 7-Zip's Compound Documents handler allows attackers to cause a denial of service via crafted archives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-53817?
CVE-2025-53817 is a medium-severity vulnerability in ipavlov 7-Zip, published on 17 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.
Weakness: CWE-476
Which versions are affected by CVE-2025-53817?
It affects 1 product.
Products include 7-Zip 7-Zip.
How do I fix CVE-2025-53817?
Upgrade to a fixed version.
Is CVE-2025-53817 being exploited?
There is no known exploitation of CVE-2025-53817 in the wild and no public exploit code.
Other vulnerabilities in ipavlov 7-Zip
Sources
Also known as DEBIAN-CVE-2025-53817, UBUNTU-CVE-2025-53817.