CVE-2026-36618: n/a
Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version (unbound 1.22.0), aiding targeted attacks against known vulnerabilities.
AI Analysis
Technical Summary
The Mercusys AC12G (EU) V1 router running firmware AC12G(EU)_V1_200909 responds to DNS version.bind CHAOS TXT queries by revealing the DNS resolver software version, unbound 1.22.0. This constitutes an information disclosure vulnerability (CWE-200) that could assist attackers in identifying and exploiting known vulnerabilities in the disclosed DNS resolver version. The vulnerability has been assigned CVE-2026-36618 and is rated medium severity with a CVSS 3.1 base score of 4.3, reflecting low complexity and no required privileges or user interaction for information disclosure. No vendor advisory or patch information is currently available.
Potential Impact
The vulnerability allows remote attackers to obtain the DNS resolver software version information from the affected device. This information disclosure may facilitate targeted attacks against known vulnerabilities in the unbound 1.22.0 DNS resolver. There is no direct impact on integrity or availability, only confidentiality is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to DNS version.bind CHAOS TXT queries from untrusted networks to reduce information exposure.
CVE-2026-36618: n/a
Description
Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version (unbound 1.22.0), aiding targeted attacks against known vulnerabilities.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Mercusys AC12G (EU) V1 router running firmware AC12G(EU)_V1_200909 responds to DNS version.bind CHAOS TXT queries by revealing the DNS resolver software version, unbound 1.22.0. This constitutes an information disclosure vulnerability (CWE-200) that could assist attackers in identifying and exploiting known vulnerabilities in the disclosed DNS resolver version. The vulnerability has been assigned CVE-2026-36618 and is rated medium severity with a CVSS 3.1 base score of 4.3, reflecting low complexity and no required privileges or user interaction for information disclosure. No vendor advisory or patch information is currently available.
Potential Impact
The vulnerability allows remote attackers to obtain the DNS resolver software version information from the affected device. This information disclosure may facilitate targeted attacks against known vulnerabilities in the unbound 1.22.0 DNS resolver. There is no direct impact on integrity or availability, only confidentiality is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to DNS version.bind CHAOS TXT queries from untrusted networks to reduce information exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a20657ce29bf47b50d4101a
Added to database: 6/3/2026, 5:33:48 PM
Last enriched: 6/10/2026, 7:40:03 PM
Last updated: 6/18/2026, 4:37:48 AM
Views: 53
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