CVE-2026-125265
Last modified
CVE-2026-125265 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. FFmpeg through 9.0.2 contains a use-after-free vulnerability in libavcodec/nvdec.c because ff_nvdec_start_frame() fails to reset ctx->bitstream after slice errors. Attackers can supply crafted video that abandons a picture before end_frame, causing cuvidDecodePicture() to read freed heap memory, crashing applications or exposing stale heap contents.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.
Description
FFmpeg through 9.0.2 contains a use-after-free vulnerability in libavcodec/nvdec.c because ff_nvdec_start_frame() fails to reset ctx->bitstream after slice errors. Attackers can supply crafted video that abandons a picture before end_frame, causing cuvidDecodePicture() to read freed heap memory, crashing applications or exposing stale heap contents.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| FFmpeg | FFmpeg | <= 9.0.2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-125265?
How severe is CVE-2026-125265?
How do I fix CVE-2026-125265?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-12526The Advanced Custom Fields: Extended WordPress plugin before…8.1
- CVE-2026-125260FFmpeg through 9.0.2 contains a heap buffer overflow vulnera…7
- CVE-2026-125261FFmpeg through 9.0.2 contains an out-of-bounds read vulnerab…6.1
- CVE-2026-125262FFmpeg through 9.0.2 contains a heap buffer overflow vulnera…7.8
- CVE-2026-125263FFmpeg 9.0 through 9.0.2 built with liblcevc_dec fails to va…4.7
- CVE-2026-125264FFmpeg through 9.0.2 contains an uncontrolled resource consu…5.5
- CVE-2026-125266FFmpeg through 9.0.2 contains an uninitialized stack memory …3.3
- CVE-2026-125267FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a heap out…7.8
- CVE-2026-125268FFmpeg through 9.0.2 contains an uninitialized memory disclo…3.3
- CVE-2026-125269FFmpeg through 9.0.2 contains a double free vulnerability in…7
- CVE-2026-12527A broken authorization boundary in the RTSP media delivery p…6
- CVE-2026-125270FFmpeg through 9.0.2 contains a heap out-of-bounds read vuln…5.3
Are you affected by CVE-2026-125265?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST