CVE-2026-42953
CVE-2026-42953 is a high-severity vulnerability with a CVSS 4.0 base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 4.0 base score 8.4)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Published:
- Last modified:
Description
The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.
Frequently asked questions
- What is CVE-2026-42953?
- The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.
- How severe is CVE-2026-42953?
- CVE-2026-42953 has a CVSS 4.0 base score of 8.4, rated high severity.
- Is CVE-2026-42953 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-42953?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-42953 published?
- CVE-2026-42953 was published on 2026-07-07 and last updated on 2026-07-08.
References
Other CWE-787 (Out-of-bounds Write) vulnerabilities
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