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VulnerabilityPublished Updated

CVE-2025-1937: Memory Safety Bugs Present

Source GCVE Database

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Authoritative record:CVE-2025-1937· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in 136 : patch affected systems soon.

Data as of 30 Oct 2026, 01:14 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 136, 128.8, 115.21
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Mar 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

Apply the official patches released by Mozilla by upgrading to Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, or Thunderbird 128.8. These versions contain fixes for the memory safety bugs. No additional mitigation is required as the vulnerabilities are addressed in these updates.

Description

Multiple memory safety bugs were identified in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. These bugs showed evidence of memory corruption and could potentially be exploited to execute arbitrary code. The vulnerabilities have been fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8. The CVSS score for this issue is 7.5, indicating high severity. No known exploits in the wild have been reported. The vendor has released official patches addressing these issues.

References

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