CVE-2009-0471

MEDIUMCVSS v2 · 6.86.8—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 6.8 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 0.7% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: epss, nvd_v2
6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS v2: 6.8Exploit: None knownExposed services: Not assessed

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

Cross-site request forgery (CSRF) vulnerability in the HTTP server in Cisco IOS 12.4(23) allows remote attackers to execute arbitrary commands, as demonstrated by executing the hostname command with a level/15/configure/-/hostname request.

CVSS v2.0 (legacy)
6.8MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
6.8MEDIUMlow confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity68% × 45%
The EG Score, 6.8 of 10.
Exploitation1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability30% × 15%
EchelonGraph's default: CISA has not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track or Track* or Attend at high (mission-essential systems).
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
0.7%
EPSS %ILE
51st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track or Track* or 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 (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

February 6, 2009

Last Modified

April 23, 2026

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 16× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 79 of 112 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 21 repeat rows among the latest 100 are merged into the row they repeat. The 33 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 19:54 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  2. 2026-10-09 20:00 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  3. 2026-10-08 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
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  8. 2026-09-30 14:58 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  9. 2026-09-29 07:56 UTCEG score recompute
  10. 2026-09-27 13:39 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  11. 2026-09-26 15:52 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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  19. 2026-09-05 15:22 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  20. 2026-09-04 13:55 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  21. 2026-08-28 21:34 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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  23. 2026-08-25 13:43 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  24. 2026-08-19 16:58 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  25. 2026-08-15 01:24 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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  1. 2026-08-09 13:41 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  2. 2026-08-08 16:31 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  3. 2026-08-06 13:41 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  4. 2026-07-30 16:22 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  5. 2026-07-30 01:26 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  6. 2026-07-26 13:37 UTCEG score recompute▲ 6.80
  7. 2026-07-25 14:12 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  8. 2026-07-24 14:12 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  9. 2026-07-23 14:14 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  10. 2026-07-23 00:58 UTCEG score recompute
  11. 2026-07-23 00:36 UTCEG score recompute
  12. 2026-07-23 00:03 UTCEG score recompute
  13. 2026-07-22 21:42 UTCEG score recompute
  14. 2026-07-22 14:03 UTCEPSS rescoreEPSS 0.7% · 48th percentile
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  17. 2026-07-18 09:59 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  18. 2026-07-16 16:58 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  19. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  20. 2026-07-15 01:55 UTCEPSS rescoreEPSS 0.7% · 48th percentile
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  23. 2026-07-11 08:22 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  24. 2026-07-09 19:04 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  25. 2026-07-08 15:10 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  26. 2026-07-06 16:23 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  27. 2026-07-06 02:19 UTCEPSS rescoreEPSS 0.7% · 48th percentile
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  31. 2026-06-30 23:19 UTCEPSS rescoreEPSS 0.7% · 47th percentile
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Frequently asked(4)

What is CVE-2009-0471?
CVE-2009-0471 is a medium vulnerability published on February 6, 2009. Cross-site request forgery (CSRF) vulnerability in the HTTP server in Cisco IOS 12.4(23) allows remote attackers to execute arbitrary commands, as demonstrated by executing the hostname command with a level/15/configure/-/hostname request.
When was the CVE record for CVE-2009-0471 published?
The CVE record for CVE-2009-0471 was published on February 6, 2009. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 23, 2026; the record at its source may have been updated since.
Is CVE-2009-0471 actively exploited?
CVE-2009-0471 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
How do I remediate CVE-2009-0471?
No fix for CVE-2009-0471 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.

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