CVE-2026-20312

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN 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-2026-20312 are related to Cleartext storage of sensitive information issues that are grouped under the Common Weakness Enumeration (CWE) CWE-312.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 14, 2026

Advisory Details (1)

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

Cisco Catalyst SD-WAN Software Security Hardening Release: August 2026

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3K

Vendor Advisories for CVE-2026-20312(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 24× in last 7d / 101× 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 166 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-20312?
CVE-2026-20312 is a high vulnerability published on August 5, 2026. As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN 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-2026-20312 disclosed?
CVE-2026-20312 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20312 actively exploited?
CVE-2026-20312 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 81.5% of all scored CVEs.
What is the CVSS score of CVE-2026-20312?
CVE-2026-20312 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-20312?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20312, 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.

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