CVE-2026-21126
MEDIUMCVSS 6.9/10EPSS 0.16%
Last modified
CVE-2026-21126 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Samsung Mobile | Samsung Mobile Devices | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-21126?
Improper input validation in getting cover image in libsimba.heifdec.media.samsung.so prior to SMR Oct-2026 Release 1 allows local attackers to write out-of-bounds memory.
How severe is CVE-2026-21126?
CVE-2026-21126 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-21126?
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-2026-21120Use after free in WSM service prior to SMR Oct-2026 Release …8.9
- CVE-2026-21121Improper handling of insufficient permission in CmcCore prio…6.9
- CVE-2026-21122Out-of-bounds write in libsamsungtts.so prior to SMR Oct-202…7
- CVE-2026-21123Improper privilege management in Locksettings prior to SMR O…6.7
- CVE-2026-21124Improper input validation in getting cover image in libsimba…8.6
- CVE-2026-21125Improper input validation in parsing sheifd in libsimba.heif…8.6
- CVE-2026-21127Improper export of android application components in Samsung…6.9
- CVE-2026-21128Improper input validation in CreditCardRegisterActivity of S…5.1
- CVE-2026-21129Improper input validation in GuestCreditCardRegisterActivity…5.1
- CVE-2026-2113A security vulnerability has been detected in yuan1994 tpadm…9.8
- CVE-2026-21130Improper input validation in CreditCardRetrieveActivity of S…5.1
- CVE-2026-21131Incorrect default permission in Samsung Flow prior to versio…2.1
Are you affected by CVE-2026-21126?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST