CVE-2026-20288

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-05. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by entering crafted inputs to the web-based management interface of the affected software. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system as the root user.  Cisco has assigned this vulnerability a SIR of High rather than Medium as the score indicates because additional security implications could occur when the attacker becomes root.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Cisco Integrated Management Controller Argument Injection Vulnerabilities

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cimc-arg-inject-upSHdMfU

Vendor Advisories for CVE-2026-20288(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 / 51× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 08:14 UTCEG score recompute
  3. 2026-08-20 08:14 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 06:59 UTCEG score recompute
  6. 2026-08-19 06:59 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 05:45 UTCEG score recompute
  9. 2026-08-18 05:45 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 04:31 UTCEG score recompute
  12. 2026-08-17 04:31 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 03:16 UTCEG score recompute
  15. 2026-08-16 03:16 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 02:01 UTCEG score recompute
  18. 2026-08-15 02:01 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 00:46 UTCEG score recompute
  21. 2026-08-14 00:46 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-12 23:32 UTCEG score recompute
  24. 2026-08-12 23:32 UTCGHSA enrichment
  25. 2026-08-12 13:50 UTCEPSS rescore
Show 26 more
  1. 2026-08-11 22:17 UTCEG score recompute
  2. 2026-08-11 22:17 UTCGHSA enrichment
  3. 2026-08-11 13:42 UTCEPSS rescore
  4. 2026-08-11 00:00 UTCEPSS rescore
  5. 2026-08-10 21:03 UTCGHSA enrichment
  6. 2026-08-09 19:48 UTCEG score recompute
  7. 2026-08-09 19:48 UTCGHSA enrichment
  8. 2026-08-09 13:46 UTCEPSS rescore
  9. 2026-08-08 18:34 UTCEG score recompute
  10. 2026-08-08 18:34 UTCGHSA enrichment
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-07 17:19 UTCEG score recompute
  13. 2026-08-07 17:19 UTCGHSA enrichment
  14. 2026-08-06 16:05 UTCEG score recompute
  15. 2026-08-06 16:05 UTCGHSA enrichment
  16. 2026-08-06 13:46 UTCEPSS rescore
  17. 2026-08-06 05:25 UTCEG score recompute
  18. 2026-08-06 05:25 UTCGHSA enrichment
  19. 2026-08-06 04:25 UTCEG score recompute
  20. 2026-08-06 04:25 UTCGHSA enrichment
  21. 2026-08-05 18:31 UTCEG score recompute
  22. 2026-08-05 18:31 UTCGHSA enrichment
  23. 2026-08-05 17:57 UTCEG score recompute
  24. 2026-08-05 17:30 UTCEG score recompute
  25. 2026-08-05 16:52 UTCEG score recompute
  26. 2026-08-05 16:50 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-20288?
CVE-2026-20288 is a medium vulnerability published on August 5, 2026. A vulnerability in the web-based management interface of Cisco IMC could allow an authenticated, remote attacker with Admin privileges to execute arbitrary commands on the underlying operating system of an affected system and elevate privileges to root.  This vulnerability is due to…
When was CVE-2026-20288 disclosed?
CVE-2026-20288 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20288 actively exploited?
CVE-2026-20288 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 72.2% of all scored CVEs.
What is the CVSS score of CVE-2026-20288?
CVE-2026-20288 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-20288?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20288, 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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