CVE-2026-20269

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. A secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.6Exploit: None knownExposed services: Not assessed

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

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20269 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
54
EG Risk 54/100CISA SSVC

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
Severity86% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

October 3, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Cisco IOS XE Software Security Hardening Release: August 2026

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxe-V8NMuMZJ

Vendor Advisories for CVE-2026-20269(2)

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 19× in last 7d / 89× 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 203 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20269?
CVE-2026-20269 is a high vulnerability published on August 5, 2026. As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The…
When was CVE-2026-20269 disclosed?
CVE-2026-20269 was first published on August 5, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20269 actively exploited?
CVE-2026-20269 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-20269?
CVE-2026-20269 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-20269?
No fix for CVE-2026-20269 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-20269 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-20269

Explore →

Is Your Infrastructure Affected by CVE-2026-20269?

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

Book a Demo →Browse All CVEs