Skip to main content
Public proof of concept

CVE-2025-9527

A public proof of concept exists; no exploitation attested.

  • Published2025-08-27
  • WeaknessCWE-119 · CWE-121

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ack_policy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Timeline

dates in UTC
  1. 2025-08-2714:15CVE publishedNVD

Versions per branch

NVD
Linksys e1700 firmwareversion to verify
BranchAffectedFixed in
1.0= 1.0.0.4.003no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Linksys E1700
    Affected
    • = 1.0.0.4.003no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-08-27

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2025-08-27
  • CNACVSS 4.07.4known since 2026-10-23
  • CNACVSS 3.18.8known since 2026-10-23
  • CNACVSS 2.09known since 2026-10-23
  • CNAweakness (CWE)CWE-119, CWE-121known since 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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
Published
2025-08-27
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-wmmv-mw2h-x89h

Frequently asked questions

What is CVE-2025-9527?

A vulnerability was found in Linksys E1700 1.0.0.4.003. This affects the function QoSSetup of the file /goform/QoSSetup. Performing manipulation of the argument ack_policy results in stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Is CVE-2025-9527 actively exploited?

A proof-of-concept exploit exists for CVE-2025-9527, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-9527?

CVE-2025-9527 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Running Linksys E1700? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record