CVE-2025-21043
CVSS v3
9.8
CRITICAL
EPSS Score
4.9 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.
CISA Known Exploited Vulnerability
- Date Added
- 2025-10-02
- Patch Due Date
- 2025-10-23
- Ransomware Use
- Unknown
Technical details
- Published
- 2025-09-12
Frequently asked questions
What is CVE-2025-21043?
Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.
Is CVE-2025-21043 actively exploited?
Yes. CVE-2025-21043 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-10-23.
What is the CVSS score for CVE-2025-21043?
CVE-2025-21043 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2025-21043 affecting your environment?
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