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Public proof of conceptFix available

CVE-2022-26376

A public proof of concept exists; no exploitation attested.

  • Published2022-08-05
  • Fixed in3.0.0.4.386_48706
  • WeaknessCWE-787

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 memory corruption vulnerability exists in the httpd unescape functionality of Asuswrt prior to 3.0.0.4.386_48706 and Asuswrt-Merlin New Gen prior to 386.7.. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

Timeline

dates in UTC
  1. 2022-08-0522:15CVE publishedNVD

Versions per branch

NVD
Asus asuswrt
BranchAffectedFixed in
3.0< 3.0.0.4.386_487063.0.0.4.386_48706
Asus et12 firmwareversion to verify
BranchAffectedFixed in
3.0< 3.0.0.4.386_488233.0.0.4.386_48823
Asus gt-ax11000 firmwareversion to verify
BranchAffectedFixed in
3.0< 3.0.0.4.386_495593.0.0.4.386_49559

16 more products in the sources.

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

  • Asuswrt-Merlin New Gen
    Affected
    • = prior to 386.7no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-10-07

Fix

  1. Update Asus asuswrt to 3.0.0.4.386_48706

Detection

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

Sources

  • CISA-ADPSSVC decisionpoc2025-04-15
  • NVDCVSS 3.19.8read 2026-10-23
  • CNACVSS 3.05.3known since 2026-10-23
  • CNAweakness (CWE)CWE-787known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score1.5 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-08-05
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5v6f-j685-6xv8

Frequently asked questions

What is CVE-2022-26376?

A memory corruption vulnerability exists in the httpd unescape functionality of Asuswrt prior to 3.0.0.4.386_48706 and Asuswrt-Merlin New Gen prior to 386.7.. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

Is CVE-2022-26376 actively exploited?

A proof-of-concept exploit exists for CVE-2022-26376, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2022-26376?

CVE-2022-26376 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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