Dashboard / CVE-2026-121931

CVE-2026-121931

HIGH
MEDIUM Priority: 0.23 BB Relevance: 63/100
Published: 2026-11-04 Modified: 2026-11-09 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

Description

A security vulnerability has been detected in Linksys WRT54GL 4.30.18. The impacted element is the function system of the file apply.cgi of the component Traceroute Diagnostic Function. Such manipulation of the argument traceroute_ip leads to os command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness Classification (2)

Affected Software (2)

VendorProductVersion
Linksys WRT54GL 4.30.18
Linksys WRT54GL 4.30.18

References & Advisories (6)

https://vuldb.com/vuln/431043
vdb-entry technical-description
https://vuldb.com/submit/1024099
third-party-advisory
https://vuldb.com/vuln/431043/cti
signature permissions-required

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.5 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X

EPSS — Exploitation Probability

2.72%
Raw Score 0.027220
Percentile 86.3%
Date 2026-11-14

EPSS Trend

2026-11-14
0.02722
2026-11-13
0.02722
2026-11-12
0.02722
2026-11-10
0.02722
2026-11-09
0.02722
2026-11-08
0.02722
2026-11-07
0.02722
2026-11-06
0.02722
2026-11-05
0.02722

Intelligence Sources

mitre ref →
nvd ref →

External Links