CVE-2026-54240
Last modified
CVE-2026-54240 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
libde265 is an open source implementation of the h.265 video codec. Versions prior to 1.1.1 use signed 32-bit arithmetic to calculate pixel offsets, allowing a crafted HEVC stream with large image dimensions to trigger an integer overflow and cause out-of-bounds heap reads or writes, potentially disclosing data, corrupting memory, or crashing the decoder. Version 1.1.1 contains a patch.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libde265 | < 1.1.1 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-54240?
How severe is CVE-2026-54240?
How do I fix CVE-2026-54240?
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-2026-54233vLLM is an inference and serving engine for large language m…6.5
- CVE-2026-54234vLLM is a high-throughput and memory-efficient inference and…7.5
- CVE-2026-54235vLLM is an inference and serving engine for large language m…6.5
- CVE-2026-54236vLLM is an inference and serving engine for large language m…5.3
- CVE-2026-54237Wavelog is web-based amateur radio logging software. From 1.…9.3
- CVE-2026-54239Faust.js is a headless WordPress toolkit. Prior to 1.8.11, t…8.8
- CVE-2026-54241libde265 is an open source implementation of the h.265 video…7.4
- CVE-2026-54242Statamic is a Laravel and Git powered content management sys…4.9
- CVE-2026-54243Statamic is a Laravel and Git powered content management sys…6.1
- CVE-2026-54244Statamic is a Laravel and Git powered content management sys…3.5
- CVE-2026-54245Fleet is an open-source device management platform built on …7.6
- CVE-2026-54246Skipper is an HTTP router and reverse proxy for service comp…5.7
Are you affected by CVE-2026-54240?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST