CVE-2025-8746Public exploit

Process crash via malformed options file

Published Aug 9, 2025 · Updated Aug 11, 2025

Memory corruption in GNU libopts 27.6 and earlier allows local users to crash a linked program via a malformed options file. The remove_settings function searches malformed configuration-file data with strstr without preserving valid string bounds, causing an out-of-bounds read in __strstr_sse2. A local low-privileged user must cause an AutoOpts-based program with load-opts support to process the crafted file; the demonstrated consequence is process termination.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in GNU libopts 27.6 and earlier allows local users to crash a linked program via a malformed options file. The remove_settings function searches malformed configuration-file data with strstr without preserving valid string bounds, causing an out-of-bounds read in __strstr_sse2. A local low-privileged user must cause an AutoOpts-based program with load-opts support to process the crafted file; the demonstrated consequence is process termination.

The record

CVE
CVE-2025-8746
Published
Aug 9, 2025
Updated
Aug 11, 2025
Vendor
The GnuPG Project
Product
libopts
Classifications
CWE-119, CWE-787, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=27.0
  2. Affected versionversion=27.1
  3. Affected versionversion=27.2
  4. Affected versionversion=27.3
  5. Affected versionversion=27.4
  6. Affected versionversion=27.5
  7. Affected versionversion=27.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The GnuPG Project · liboptsversion=27.0; version=27.1; version=27.2; version=27.3; version=27.4; version=27.5; version=27.6

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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