CVE-2023-20273

CRITICALNVD 7.29.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-10-23), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.2 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 90%CVSS: 7.2Exploit: NoneExposed: 0

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

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands with the privileges of root. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web UI. A successful exploit could allow the attacker to inject commands to the underlying operating system with root privileges.

CVSS v3
7.2
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
90%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

October 25, 2023

Last Modified

October 28, 2025

Advisory Details (2)

Auto-updated Jun 11, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20273
generic

Multiple Vulnerabilities in Cisco IOS XE Software Web UI Feature

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-webui-privesc-j22SaA4z

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 36× in last 7d / 187× 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 388 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 Metasploit modules) (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsmokeintheshell/CVE-2023-20273
    First seen Dec 9, 2023

    CVE-2023-20273 Exploit PoC

    Open source ↗
  • Metasploitexploit/linux/misc/cisco_ios_xe_rce✓ verified
    First seen Oct 16, 2023

    Cisco IOX XE Unauthenticated RCE Chain

    Open source ↗
  • Metasploitauxiliary/admin/http/cisco_ios_xe_os_exec_cve_2023_20273✓ verified
    First seen Oct 16, 2023

    Cisco IOX XE unauthenticated OS command execution

    Open source ↗

Frequently asked(6)

What is CVE-2023-20273?
CVE-2023-20273 is a critical vulnerability published on October 25, 2023. A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands with the privileges of root. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web…
When was CVE-2023-20273 disclosed?
CVE-2023-20273 was first published in the National Vulnerability Database on October 25, 2023, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-20273 actively exploited?
Yes. CISA added CVE-2023-20273 to the Known Exploited Vulnerabilities catalog on October 23, 2023, affecting Cisco Cisco IOS XE Web UI. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-20273?
CVE-2023-20273 has a CVSS v3 base score of 7.2 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-20273?
CVE-2023-20273 affects Cisco Cisco IOS XE Web UI. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-20273?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20273, 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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