CVE-2026-21091
HIGHCVSS 7.8/10EPSS 0.10%
Last modified
CVE-2026-21091 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Out-of-bounds write in libcodec2secevrcdec.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.. EPSS estimates a 0.10% chance of exploitation in the next 30 days.
Description
Out-of-bounds write in libcodec2secevrcdec.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Samsung | Android | 14.0 |
| Samsung | Android | 15.0 |
| Samsung | Android | 16.0 |
| Samsung | Android | 17.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-21091?
Out-of-bounds write in libcodec2secevrcdec.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.
How severe is CVE-2026-21091?
CVE-2026-21091 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.10% probability of exploitation in the next 30 days.
How do I fix CVE-2026-21091?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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-2026-21086Improper authorization in ProxyHandler prior to SMR Aug-2026…4.8
- CVE-2026-21087Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Rel…7.8
- CVE-2026-21088Improper input validation in loading a subtitle frame in lib…7.8
- CVE-2026-21089Improper input validation in removing style tag in libsubext…7.8
- CVE-2026-2109A vulnerability was identified in jsbroks COCO Annotator up …8.1
- CVE-2026-21090Out-of-bounds write in libsaviextractor.so prior to SMR Sep-…7.8
- CVE-2026-21092Path traversal in ImsService prior to SMR Sep-2026 Release 1…5.3
- CVE-2026-21093Stack-based buffer overflow in PROCA trustlet prior to SMR S…6.7
- CVE-2026-21094Improper input validation in wpa_supplicant prior to SMR Sep…8.8
- CVE-2026-21095Heap-based buffer overflow in DNG decoder of libimagecodec.q…9.8
- CVE-2026-21096Heap-based buffer overflow in JPEG decoder of libimagecodec.…9.8
- CVE-2026-21097Improper authentication in ActivityTaskManagerService prior …6.7
Are you affected by CVE-2026-21091?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST