CVE-2026-66887

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-15. a secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

The affected products are missing authorization on state-changing CGIs and session checks are not performed.

CVSS v3
9.6
EG Score
9.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Sep 22, 2026
Patch available. Sources: cisa.
cisa Patch Available

Digital Watchdog VMAX DVR and NVR Product Lineups | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-258-01
generic

CSAF/csaf_files/OT/white/2026/icsa-26-258-01.json at develop · cisagov/CSAF · GitHub

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-258-01.json
generic

Resources

https://digital-watchdog.com/downloads/

Vendor Advisories for CVE-2026-66887(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 50× in last 7d / 74× 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. 2026-09-25 10:13 UTCGHSA enrichment
  2. 2026-09-25 06:00 UTCGHSA enrichment
  3. 2026-09-25 01:47 UTCGHSA enrichment
  4. 2026-09-24 21:34 UTCGHSA enrichment
  5. 2026-09-24 16:40 UTCEG score recompute
  6. 2026-09-24 16:40 UTCGHSA enrichment
  7. 2026-09-24 12:19 UTCGHSA enrichment
  8. 2026-09-24 08:05 UTCGHSA enrichment
  9. 2026-09-24 03:52 UTCGHSA enrichment
  10. 2026-09-23 23:28 UTCGHSA enrichment
  11. 2026-09-23 19:14 UTCEG score recompute
  12. 2026-09-23 19:14 UTCGHSA enrichment
  13. 2026-09-23 17:54 UTCEPSS rescore
  14. 2026-09-23 14:06 UTCGHSA enrichment
  15. 2026-09-23 09:53 UTCGHSA enrichment
  16. 2026-09-23 05:40 UTCGHSA enrichment
  17. 2026-09-23 01:27 UTCGHSA enrichment
  18. 2026-09-22 21:13 UTCGHSA enrichment
  19. 2026-09-22 17:00 UTCEG score recompute
  20. 2026-09-22 17:00 UTCGHSA enrichment
  21. 2026-09-22 12:41 UTCGHSA enrichment
  22. 2026-09-22 08:28 UTCGHSA enrichment
  23. 2026-09-22 04:15 UTCGHSA enrichment
  24. 2026-09-22 00:01 UTCEG score recompute
  25. 2026-09-22 00:01 UTCGHSA enrichment
Show 49 more
  1. 2026-09-21 19:48 UTCGHSA enrichment
  2. 2026-09-21 15:34 UTCGHSA enrichment
  3. 2026-09-21 11:21 UTCGHSA enrichment
  4. 2026-09-21 07:07 UTCGHSA enrichment
  5. 2026-09-21 02:46 UTCGHSA enrichment
  6. 2026-09-20 22:32 UTCEG score recompute
  7. 2026-09-20 22:32 UTCGHSA enrichment
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-20 18:19 UTCGHSA enrichment
  10. 2026-09-20 14:06 UTCGHSA enrichment
  11. 2026-09-20 09:52 UTCGHSA enrichment
  12. 2026-09-20 05:38 UTCGHSA enrichment
  13. 2026-09-20 01:24 UTCGHSA enrichment
  14. 2026-09-19 21:10 UTCGHSA enrichment
  15. 2026-09-19 16:57 UTCEG score recompute
  16. 2026-09-19 16:56 UTCGHSA enrichment
  17. 2026-09-19 12:42 UTCGHSA enrichment
  18. 2026-09-19 08:28 UTCGHSA enrichment
  19. 2026-09-19 04:14 UTCGHSA enrichment
  20. 2026-09-19 00:01 UTCGHSA enrichment
  21. 2026-09-18 19:48 UTCEG score recompute
  22. 2026-09-18 19:48 UTCGHSA enrichment
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 17:00 UTCGHSA enrichment
  25. 2026-09-18 12:47 UTCGHSA enrichment
  26. 2026-09-18 08:33 UTCGHSA enrichment
  27. 2026-09-18 04:20 UTCGHSA enrichment
  28. 2026-09-18 00:07 UTCGHSA enrichment
  29. 2026-09-17 19:53 UTCEG score recompute
  30. 2026-09-17 19:53 UTCGHSA enrichment
  31. 2026-09-17 15:37 UTCGHSA enrichment
  32. 2026-09-17 11:24 UTCGHSA enrichment
  33. 2026-09-17 07:08 UTCGHSA enrichment
  34. 2026-09-17 02:54 UTCGHSA enrichment
  35. 2026-09-16 22:40 UTCGHSA enrichment
  36. 2026-09-16 18:26 UTCEG score recompute
  37. 2026-09-16 18:26 UTCGHSA enrichment
  38. 2026-09-16 18:00 UTCEG score recompute
  39. 2026-09-16 18:00 UTCGHSA enrichment
  40. 2026-09-16 14:13 UTCEG score recompute
  41. 2026-09-16 14:13 UTCGHSA enrichment
  42. 2026-09-16 14:08 UTCEPSS rescore
  43. 2026-09-16 09:59 UTCGHSA enrichment
  44. 2026-09-16 05:46 UTCGHSA enrichment
  45. 2026-09-16 01:33 UTCEG score recompute
  46. 2026-09-16 01:33 UTCGHSA enrichment
  47. 2026-09-15 21:20 UTCEG score recompute
  48. 2026-09-15 20:43 UTCEG score recompute
  49. 2026-09-15 20:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66887?
CVE-2026-66887 is a critical vulnerability published on September 15, 2026. The affected products are missing authorization on state-changing CGIs and session checks are not performed.
When was CVE-2026-66887 disclosed?
CVE-2026-66887 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66887 actively exploited?
CVE-2026-66887 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 76.8% of all scored CVEs.
What is the CVSS score of CVE-2026-66887?
CVE-2026-66887 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-66887?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66887, 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-2026-66887

Explore →

Is Your Infrastructure Affected by CVE-2026-66887?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs