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 — 3 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 17× in last 7d / 68× 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.

Showing the most recent 100 of 138 total refreshes for this CVE.

  1. 2026-09-15 09:14 UTCEG score recompute
  2. 2026-09-15 09:14 UTCGHSA enrichment
  3. 2026-09-13 17:08 UTCEG score recompute
  4. 2026-09-13 17:08 UTCGHSA enrichment
  5. 2026-09-13 16:46 UTCEPSS rescore
  6. 2026-09-12 16:34 UTCEG score recompute
  7. 2026-09-12 16:34 UTCGHSA enrichment
  8. 2026-09-12 15:00 UTCEPSS rescore
  9. 2026-09-11 15:54 UTCEG score recompute
  10. 2026-09-11 15:54 UTCGHSA enrichment
  11. 2026-09-11 14:52 UTCEPSS rescore
  12. 2026-09-11 09:36 UTCEPSS rescore
  13. 2026-09-10 10:19 UTCEG score recompute
  14. 2026-09-10 10:19 UTCGHSA enrichment
  15. 2026-09-10 09:34 UTCEPSS rescore
  16. 2026-09-09 08:25 UTCEG score recompute
  17. 2026-09-09 08:25 UTCGHSA enrichment
  18. 2026-09-08 22:00 UTCEPSS rescore
  19. 2026-09-08 00:19 UTCEG score recompute
  20. 2026-09-08 00:19 UTCGHSA enrichment
  21. 2026-09-07 16:01 UTCEPSS rescore
  22. 2026-09-06 23:45 UTCEG score recompute
  23. 2026-09-06 23:45 UTCGHSA enrichment
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-05 19:16 UTCEG score recompute
Show 75 more
  1. 2026-09-05 19:16 UTCGHSA enrichment
  2. 2026-09-04 12:33 UTCEG score recompute
  3. 2026-09-04 12:33 UTCGHSA enrichment
  4. 2026-09-04 05:06 UTCEPSS rescore
  5. 2026-09-01 23:01 UTCEG score recompute
  6. 2026-09-01 23:01 UTCGHSA enrichment
  7. 2026-09-01 13:53 UTCEPSS rescore
  8. 2026-09-01 04:39 UTCEPSS rescore
  9. 2026-08-31 00:30 UTCEG score recompute
  10. 2026-08-31 00:30 UTCGHSA enrichment
  11. 2026-08-30 19:17 UTCEPSS rescore
  12. 2026-08-30 01:21 UTCEPSS rescore
  13. 2026-08-29 23:56 UTCEG score recompute
  14. 2026-08-29 23:56 UTCGHSA enrichment
  15. 2026-08-28 21:40 UTCEPSS rescore
  16. 2026-08-28 02:47 UTCEG score recompute
  17. 2026-08-28 02:47 UTCGHSA enrichment
  18. 2026-08-27 14:24 UTCEPSS rescore
  19. 2026-08-27 02:14 UTCEG score recompute
  20. 2026-08-27 02:14 UTCGHSA enrichment
  21. 2026-08-26 01:41 UTCEG score recompute
  22. 2026-08-26 01:41 UTCGHSA enrichment
  23. 2026-08-25 13:48 UTCEPSS rescore
  24. 2026-08-25 01:08 UTCEG score recompute
  25. 2026-08-25 01:08 UTCGHSA enrichment
  26. 2026-08-24 00:35 UTCEG score recompute
  27. 2026-08-24 00:35 UTCGHSA enrichment
  28. 2026-08-23 00:19 UTCEPSS rescore
  29. 2026-08-23 00:02 UTCEG score recompute
  30. 2026-08-23 00:02 UTCGHSA enrichment
  31. 2026-08-21 23:48 UTCEPSS rescore
  32. 2026-08-21 23:29 UTCEG score recompute
  33. 2026-08-21 23:29 UTCGHSA enrichment
  34. 2026-08-20 22:55 UTCEPSS rescore
  35. 2026-08-20 22:52 UTCGHSA enrichment
  36. 2026-08-19 22:19 UTCEG score recompute
  37. 2026-08-19 22:19 UTCGHSA enrichment
  38. 2026-08-19 17:03 UTCEPSS rescore
  39. 2026-08-18 21:46 UTCEG score recompute
  40. 2026-08-18 21:46 UTCGHSA enrichment
  41. 2026-08-18 13:48 UTCEPSS rescore
  42. 2026-08-17 21:07 UTCEG score recompute
  43. 2026-08-17 21:06 UTCGHSA enrichment
  44. 2026-08-16 20:33 UTCEG score recompute
  45. 2026-08-16 20:33 UTCGHSA enrichment
  46. 2026-08-16 14:56 UTCEPSS rescore
  47. 2026-08-16 02:14 UTCEPSS rescore
  48. 2026-08-15 20:00 UTCEG score recompute
  49. 2026-08-15 20:00 UTCGHSA enrichment
  50. 2026-08-15 01:30 UTCEPSS rescore
  51. 2026-08-14 19:26 UTCEG score recompute
  52. 2026-08-14 19:26 UTCGHSA enrichment
  53. 2026-08-13 22:00 UTCEPSS rescore
  54. 2026-08-13 18:53 UTCGHSA enrichment
  55. 2026-08-12 18:20 UTCEG score recompute
  56. 2026-08-12 18:20 UTCGHSA enrichment
  57. 2026-08-12 13:50 UTCEPSS rescore
  58. 2026-08-11 17:47 UTCEG score recompute
  59. 2026-08-11 17:47 UTCGHSA enrichment
  60. 2026-08-11 13:42 UTCEPSS rescore
  61. 2026-08-10 23:59 UTCEPSS rescore
  62. 2026-08-10 17:08 UTCGHSA enrichment
  63. 2026-08-09 16:34 UTCEG score recompute
  64. 2026-08-09 16:34 UTCGHSA enrichment
  65. 2026-08-09 13:46 UTCEPSS rescore
  66. 2026-08-08 16:37 UTCEPSS rescore
  67. 2026-08-08 16:01 UTCEG score recompute
  68. 2026-08-08 16:01 UTCGHSA enrichment
  69. 2026-08-07 15:28 UTCGHSA enrichment
  70. 2026-08-06 14:55 UTCEG score recompute
  71. 2026-08-06 14:55 UTCGHSA enrichment
  72. 2026-08-06 13:46 UTCEPSS rescore
  73. 2026-08-05 19:17 UTCEPSS rescore
  74. 2026-08-05 14:21 UTCEG score recompute
  75. 2026-08-05 14:21 UTCGHSA enrichment

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 93.9% 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

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