CVE-2025-8746: gnu libopts
Vulnerability summary
CVE-2025-8746 is a medium (CVSS 5.5) vulnerability in gnu libopts. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.5% of scored vulnerabilities. 3 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 09-08-2025PublishedVulnerability first disclosed.
- 11-08-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
10 scores · 4 sources · 4 versions- OSV · UbuntuEcosystem advisory · calculated4.8MediumCVSS: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
- NVDNIST1.9LowCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XDiffers
- CVE.orgCNA3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:RDiffers
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST1.7LowAV:L/AC:L/Au:S/C:N/I:N/A:P
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
+0.01 pp
From 0.22% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
3 foundExploit Reference (drive.google.com)
Maturity: unknown
Tcpreplay
Maturity: poc
Exploit Reference (vuldb.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Opensuse3 products
- autogen&distro=openSUSE Leap 16.0< 5.18.16-160000.3.1
- autogen&distro=openSUSE Tumbleweed< 5.18.16-8.1
- tcpreplay&distro=openSUSE Tumbleweed< 4.5.1-2.1
Suse2 products
- autogen&distro=SUSE Linux Enterprise Server 16.0< 5.18.16-160000.3.1
- autogen&distro=SUSE Linux Enterprise Server for SAP applications 16.0< 5.18.16-160000.3.1
Debian1 product
- autogenAll versions (No fix recorded) | < 1:5.18.16-8
Gnu1 product
- libopts27.0 | 27.1 | 27.2 | 27.3 | 27.4 | 27.5 | 27.6 | ≤ 27.6
Ubuntu1 product
- autogenAll versions (No fix recorded)
5 vendors · 8 products
