Buffer overflow in GNU Libopts
CVE-2025-8746
A vulnerability, which was classified as problematic, was found in GNU libopts up to 27.6. Affected is the function __strstr_sse2. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. This issue was initially reported to the tcpreplay project, but the code maintainer explains, that this "bug appears to be in libopts which is an external library." This vulnerability only affects products that are no longer supported by the maintainer.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- GNU Libopts — versions 27.0, 27.1, 27.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/appneta/tcpreplay/issues/957 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- github.com/appneta/tcpreplay/issues/957 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- drive.google.com/file/d/1yjKOHxvL_9xExy4QUb5x43dxci1x59ts/view (Exploit, exploit)
- www.gnu.org/ (Product, product)
Frequently asked questions
- What is CVE-2025-8746?
- CVE-2025-8746 is a low-severity vulnerability in GNU Libopts, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2025-08-09.
- How severe is CVE-2025-8746?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2025-8746 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.