Skip to main content
CVE-2025-8291VulnerabilityPublished Updated

Microsoft · ZIP64 End of Central Directory (EOCD) Locator record offset not checked

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2025-8291· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium.

Data as of 28 Oct 2026, 08:59 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =3.0
  • =2.0
Fixed in–

Description

CVE-2025-8291 is a vulnerability in Microsoft products where the ZIP64 End of Central Directory (EOCD) Locator record offset is not properly checked. This flaw could potentially lead to issues when processing ZIP64 archives. No CVSS score or detailed impact information is provided.

References

Community reviews

Loading reviews…