CVE-2026-12495

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 94% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Denial-of-service (DoS) vulnerability due to a stack buffer overflow in the http_gdpr_decrypt function of the Mercusys MB115-4G device's web interface. An unauthenticated attacker could exploit this vulnerability by sending a specially crafted request to the /cgi/login endpoint, causing memory corruption and the httpd process to crash, resulting in a denial of service for the web administration service.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 28, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

Stack-Based Buffer Overflow in the Mercusys MB115-4G | INCIBE-CERT | INCIBE

https://www.incibe.es/en/incibe-cert/notices/aviso/stack-based-buffer-overflow-mercusys-mb115-4g

Vendor Advisories for CVE-2026-12495(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 22× in last 7d / 22× 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.

  1. 2026-07-30 09:32 UTCEG score recompute
  2. 2026-07-30 09:32 UTCGHSA enrichment
  3. 2026-07-30 01:30 UTCEPSS rescore
  4. 2026-07-29 08:59 UTCEG score recompute
  5. 2026-07-29 08:59 UTCGHSA enrichment
  6. 2026-07-28 15:36 UTCEPSS rescore
  7. 2026-07-28 08:25 UTCEG score recompute
  8. 2026-07-28 08:25 UTCGHSA enrichment
  9. 2026-07-28 07:30 UTCEG score recompute▼ 3.90
  10. 2026-07-28 07:30 UTCGHSA enrichment
  11. 2026-07-28 07:29 UTCMITRE cvelistV5CVSS v3 → 5.3 · CVSS v4 → 5.3 · severity → MEDIUM
  12. 2026-07-28 04:26 UTCGHSA enrichment
  13. 2026-07-28 00:33 UTCGHSA enrichment
  14. 2026-07-27 20:42 UTCGHSA enrichment
  15. 2026-07-27 20:22 UTCGHSA enrichment
  16. 2026-07-27 16:25 UTCEG score recompute
  17. 2026-07-27 16:25 UTCGHSA enrichment
  18. 2026-07-27 15:31 UTCEG score recompute
  19. 2026-07-27 15:31 UTCGHSA enrichment
  20. 2026-07-27 12:22 UTCEG score recompute
  21. 2026-07-27 11:23 UTCEG score recompute
  22. 2026-07-27 11:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12495?
CVE-2026-12495 is a medium vulnerability published on July 27, 2026. Denial-of-service (DoS) vulnerability due to a stack buffer overflow in the httpgdprdecrypt function of the Mercusys MB115-4G device's web interface. An unauthenticated attacker could exploit this vulnerability by sending a specially crafted request to the /cgi/login endpoint, causing memory…
When was CVE-2026-12495 disclosed?
CVE-2026-12495 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12495 actively exploited?
CVE-2026-12495 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.1% of all scored CVEs.
What is the CVSS score of CVE-2026-12495?
CVE-2026-12495 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-12495?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12495, 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-2026-12495

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