OSV-2025-825 UNKNOWN WRITE in RescalerImportRowExpand_SSE2
A memory corruption vulnerability in the WebP library allows attackers to cause crashes or potentially execute code via crafted images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2025-825?
OSV-2025-825 is a memory corruption vulnerability in libwebp, published on 9 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=449781448
Crash type: UNKNOWN WRITE
Crash state:
RescalerImportRowExpand_SSE2
WebPRescalerImport
ProcessRows
Which versions are affected by OSV-2025-825?
1 open source package ship an affected version, including libwebp.
| Package | Affected | Fixed in |
|---|---|---|
libwebp OSS-Fuzz | All versions | None |
How do I fix OSV-2025-825?
No fix has been published for OSV-2025-825 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2025-825 being exploited?
There is no known exploitation of OSV-2025-825 in the wild and no public exploit code.