CVE-2009-0545

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (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:L/Au:N/C:C/I:C/A:C. 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 90.4% 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 CVSS v2.0
Weaponized
10.0EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High exploitation likelihood — EPSS 90%
  • Public exploit code is available (Metasploit, Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 90%CVSS v2: 10.0Exploit: Metasploit · Exploit-DB (verified)Exposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

cgi-bin/kerbynet in ZeroShell 1.0beta11 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the type parameter in a NoAuthREQ x509List action.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0HIGHlow confidence
EG Risk
86
EG Risk 86/100

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)
Severity100% × 45%
The EG Score, 10.0 of 10.
Exploitation90% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track or Track* at medium and Track* or Attend at high mission impact.
Exploitation public PoC (EG-KEV: weaponized) · 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: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
90%
EPSS %ILE
99th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track or Track* at medium and Track* or Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (EG-KEV: weaponized) · 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 12, 2009

Last Modified

April 23, 2026

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 7× 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.

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. 13 repeat rows among the latest 79 are merged into the row they repeat.

  1. 2026-10-09 20:00 UTCEPSS rescoreEPSS 90% · 99th percentile
  2. 2026-10-06 15:09 UTCEPSS rescoreEPSS 90% · 99th percentile
  3. 2026-09-29 07:57 UTCEG score recompute
  4. 2026-09-27 13:39 UTCEPSS rescoreEPSS 90% · 99th percentile
  5. 2026-09-26 15:52 UTCEPSS rescoreEPSS 90% · 99th percentile
  6. 2026-09-24 13:57 UTCEPSS rescoreEPSS 90% · 99th percentile
  7. 2026-09-15 03:04 UTCEPSS rescoreEPSS 90% · 99th percentile
  8. 2026-09-10 09:24 UTCEPSS rescoreEPSS 90% · 99th percentile
  9. 2026-09-06 13:41 UTCEPSS rescoreEPSS 90% · 99th percentile
  10. 2026-09-05 15:22 UTCEPSS rescoreEPSS 90% · 99th percentile
  11. 2026-08-28 21:34 UTCEPSS rescoreEPSS 90% · 99th percentile
  12. 2026-08-27 14:19 UTCEPSS rescoreEPSS 90% · 99th percentile
  13. 2026-08-19 16:58 UTCEPSS rescoreEPSS 90% · 99th percentile
  14. 2026-08-08 16:31 UTCEPSS rescoreEPSS 90% · 99th percentile
  15. 2026-07-30 16:22 UTCEPSS rescoreEPSS 90% · 99th percentile
  16. 2026-07-26 13:37 UTCEG score recomputeAssessed again: 10.0 HIGH
  17. 2026-07-24 14:12 UTCEPSS rescoreEPSS 90% · 99th percentile
  18. 2026-07-23 01:05 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  19. 2026-07-23 01:04 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  20. 2026-07-23 01:03 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  21. 2026-07-23 01:03 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  22. 2026-07-23 01:02 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  23. 2026-07-23 01:01 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  24. 2026-07-23 00:59 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  25. 2026-07-23 00:58 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
Show 41 more
  1. 2026-07-23 00:57 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  2. 2026-07-23 00:56 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  3. 2026-07-23 00:55 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  4. 2026-07-23 00:54 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  5. 2026-07-23 00:53 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  6. 2026-07-23 00:52 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  7. 2026-07-23 00:51 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  8. 2026-07-23 00:50 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  9. 2026-07-23 00:49 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  10. 2026-07-23 00:48 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  11. 2026-07-23 00:47 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  12. 2026-07-23 00:46 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  13. 2026-07-23 00:44 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  14. 2026-07-23 00:43 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  15. 2026-07-23 00:43 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  16. 2026-07-23 00:43 UTCEG score recompute
  17. 2026-07-23 00:42 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  18. 2026-07-23 00:40 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  19. 2026-07-23 00:38 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  20. 2026-07-23 00:36 UTCEG score recompute▼ 9.00
  21. 2026-07-23 00:03 UTCEG score recompute
  22. 2026-07-22 21:42 UTCEG score recompute
  23. 2026-07-22 14:03 UTCEPSS rescoreEPSS 90% · 99th percentile
  24. 2026-07-20 17:03 UTCEPSS rescoreEPSS 90% · 99th percentile
  25. 2026-07-15 16:54 UTCEPSS rescoreEPSS 91% · 99th percentile
  26. 2026-06-27 03:05 UTCEPSS rescoreEPSS 91% · 99th percentile
  27. 2026-06-23 21:29 UTCEPSS rescoreEPSS 91% · 99th percentile
  28. 2026-06-18 17:49 UTCEPSS rescoreEPSS 91% · 99th percentile
  29. 2026-06-17 17:49 UTCEPSS rescoreEPSS 91% · 99th percentile
  30. 2026-06-15 17:44 UTCEPSS rescoreEPSS 91% · 99th percentile
  31. 2026-06-14 23:14 UTCEPSS rescoreEPSS 94% · 99th percentile
  32. 2026-06-08 14:13 UTCEPSS rescoreEPSS 94% · 99th percentile
  33. 2026-06-06 13:44 UTCEPSS rescoreEPSS 94% · 99th percentile
  34. 2026-06-05 22:44 UTCEPSS rescoreEPSS 94% · 99th percentile
  35. 2026-06-04 13:09 UTCEPSS rescoreEPSS 94% · 99th percentile
  36. 2026-05-30 18:15 UTCEG score recompute
  37. 2026-05-30 18:15 UTCGHSA enrichmentGHSA-9p53-hww6-pm2p · GitHub severity HIGH
  38. 2026-05-27 13:38 UTCEPSS rescoreEPSS 94% · 99th percentile
  39. 2026-05-26 07:16 UTCEPSS rescoreEPSS 94% · 99th percentile
  40. 2026-05-22 21:15 UTCEPSS rescoreEPSS 94% · 99th percentile
  41. 2026-05-18 21:29 UTCEPSS rescoreEPSS 94% · 99th percentile

Publicly available exploits

(3 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 1 Exploit-DB entry), as is 1 Nuclei detection template. A detection template checks whether a system is affected; it is not necessarily exploit code. No release with the fix is confirmed, so defenders should restrict or isolate affected systems accordingly until one is applied.

  • Metasploitexploit/unix/webapp/zeroshell_exec✓ verified
    Published Sep 24, 2013

    ZeroShell Remote Code Execution

    Open source ↗
  • Exploit-DBEDB-8023✓ verified
    Published Feb 9, 2009

    ZeroShell 1.0beta11 - Remote Code Execution

    Open source ↗
  • Nucleihttp/cves/2009/CVE-2009-0545.yaml
    Published May 19, 2021

    ZeroShell <= 1.0beta11 Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2009-0545?
CVE-2009-0545 is a high-severity vulnerability; its CVE record was published on February 12, 2009. cgi-bin/kerbynet in ZeroShell 1.0beta11 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the type parameter in a NoAuthREQ x509List action.
When was CVE-2009-0545 made public?
CVE-2009-0545 was made public on February 9, 2009: that is the date its CVE record's CNA, MITRE Corporation, gives for when the vulnerability was made public. The CVE record itself was published on February 12, 2009. 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-2009-0545 actively exploited?
CVE-2009-0545 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: a Metasploit module exists for it, and Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 90% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
How do I remediate CVE-2009-0545?
A fix for CVE-2009-0545 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Dependency Blast Radius

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