Dashboard / CVE-2026-121617

CVE-2026-121617

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-11-04 Modified: 2026-11-09 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

A security flaw has been discovered in Linksys E5600 1.1.0.26. Affected by this issue is the function init_multipart of the file /cgi-bin/upload_fw.cgi of the component Header Parser. The manipulation results in out-of-bounds write. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. 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 E5600 1.1.0.26
Linksys E5600 1.1.0.26

References & Advisories (6)

https://vuldb.com/vuln/430465
vdb-entry technical-description
https://vuldb.com/submit/1023313
third-party-advisory
https://vuldb.com/vuln/430465/cti
signature permissions-required

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:X

EPSS — Exploitation Probability

0.47%
Raw Score 0.004700
Percentile 41.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00470
2026-11-13
0.00470
2026-11-12
0.00470
2026-11-10
0.00470
2026-11-09
0.00470
2026-11-08
0.00470
2026-11-07
0.00470
2026-11-06
0.00470
2026-11-05
0.00470
2026-11-04
0.00470

Intelligence Sources

mitre ref →
nvd ref →

External Links