CVE-2026-36605

MEDIUMNVD 6.56.5—Trending — 3 sources updated this week

6.5

Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 is vulnerable to a HTTP denial of service via a low number of crafted incomplete HTTP requests, causing a persistent crash that requires physical power cycling to recover.

CVSS v3: 6.5
EG Score: 6.5(high)
EPSS: 3.6%
KEV: Not listed

Published

June 3, 2026

Last Modified

June 4, 2026

References (1)

cve@mitrehttps://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36605.md

Vendor Advisories for CVE-2026-36605(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-j2fc-v5xj-h5gr
GitHub Security AdvisoriesMedium
Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 is vulnerable to a HTTP denial of...

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:25 UTCepss_batch
2026-06-07 15:25 UTCepss_batch
2026-06-07 15:25 UTCepss_batch
2026-06-06 22:24 UTCEG score recompute▲ 6.50
2026-06-06 22:24 UTCGHSA enrichment
2026-06-06 13:47 UTCepss_batch
2026-06-06 13:47 UTCepss_batch
2026-06-05 22:47 UTCepss_batch
2026-06-05 22:47 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-03 17:37 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-36605?

CVE-2026-36605 is a medium vulnerability published on June 3, 2026. Mercusys AC12G (EU) V1 router with firmware AC12G(EU)V1200909 is vulnerable to a HTTP denial of service via a low number of crafted incomplete HTTP requests, causing a persistent crash that requires physical power cycling to recover.

When was CVE-2026-36605 disclosed?

CVE-2026-36605 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on June 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-36605 actively exploited?

CVE-2026-36605 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-36605?

CVE-2026-36605 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2026-36605?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-36605, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-36605

📅 Published

🔄 Last Modified

🔗 References (1)

📣 Vendor Advisories for CVE-2026-36605(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)