Mercusys MW302R MW302R(EU)_V1_1.4.10 Build 231023 is vulnerable to Buffer Overflow in the administrative web interface. A stack buffer overflow vulnerability in the administrative web interface allows an authenticated attacker with administrative privileges to trigger a system crash by sending a specially crafted request. The vulnerability results in denial of service through control flow manipulation to an arbitrary instruction address.
CVE-2026-31267
MEDIUMPre-NVD 5.75.7—Trending — 5 sources updated this week
EchelonGraph scoreHIGH confidence
Score 5.7 from GitHub Security Advisory published 2026-07-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.7; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.7Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.7
- EG Score
- 5.7(high)
- EPSS
- 9.8%
- KEV
- Not listed
Published
July 9, 2026
Last Modified
July 10, 2026
Advisory Details (2)
Auto-updated Jul 10, 2026Patch available.
generic Patch Available
CVE-2026-31267.md · GitHub
https://gist.github.com/BarrYPL/13dcd071673866cbbfaaa05085b98cf3Vendor Advisories for CVE-2026-31267(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 13× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-13 22:30 UTCEPSS rescore
- 2026-07-13 17:00 UTCEG score recompute
- 2026-07-13 17:00 UTCGHSA enrichment
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-12 16:38 UTCEG score recompute▲ 5.70
- 2026-07-12 16:38 UTCGHSA enrichment
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-10 15:37 UTCMITRE cvelistV5CVSS v3 → 5.7 · severity → MEDIUM
- 2026-07-09 21:46 UTCNVD update
- 2026-07-09 21:05 UTCEG score recompute
- 2026-07-09 21:05 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-121
- CVE-2012-10058EG 10.0CRITICAL
- CVE-2010-20113EG 9.8CRITICAL
- CVE-2010-20121EG 9.8CRITICAL
- CVE-2012-10060EG 9.8CRITICAL
- CVE-2012-10023EG 9.8CRITICAL
- CVE-2013-10042EG 9.8CRITICAL
- CVE-2012-10021EG 9.8CRITICAL
- CVE-2014-125117EG 9.8EPSS 91%CRITICAL
- CVE-2017-14854NVD 9.1EG 9.8EPSS 94%CRITICAL
- CVE-2015-1006EG 9.8EPSS 92%CRITICAL
Frequently asked(5)
What is CVE-2026-31267?
CVE-2026-31267 is a medium vulnerability published on July 9, 2026. Mercusys MW302R MW302R(EU)V11.4.10 Build 231023 is vulnerable to Buffer Overflow in the administrative web interface. A stack buffer overflow vulnerability in the administrative web interface allows an authenticated attacker with administrative privileges to trigger a system crash by sending a…
When was CVE-2026-31267 disclosed?
CVE-2026-31267 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31267 actively exploited?
CVE-2026-31267 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-31267?
CVE-2026-31267 has a CVSS v3.1 base score of 5.7 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-31267?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31267, 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
Explore the affected products and dependency analysis for CVE-2026-31267
Is Your Infrastructure Affected by CVE-2026-31267?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.