CVE-2009-2335

MEDIUMCVSS v2 · 5.05.0
EchelonGraph scoreLOW confidence

“—” beside the score: it is equal to NVD's CVSS v2 base score.

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — NVD rates that MEDIUM (NVD's v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:N/A:N. 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 85% exploitation probability in the next 30 days; it does not lift the v2 base. EPSS sets EG Risk's exploitation input. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: NVD CVSS v2.0
Trending — 3 sources updated this weekWeaponized

Also known asEUVD-2009-2331 (ENISA EUVD) · GHSA-4643-w74c-m4wv (GitHub Security Advisories)Source: ENISA EUVD

5.0EG
EchelonGraph verdictPlan a fixRemediate 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 85%
  • Public exploit code is available (Metasploit, other public proof-of-concept code)
CISA-KEV: Not listedEPSS PROB: 85%CVSS v2: 5.0Exploit: Metasploit · other public PoCExposed services: Not assessed

A fix is available — apply it.

WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for "user convenience."

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0MEDIUMlow confidence
EG Risk
57
EG Risk 57/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity50% × 45%
Impact severity (EG Severity): CVSS 5.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation85% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). 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 available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
85%
EPSS %ILE
99th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.0): severity, escalated by confirmed exploitation. This CVE's 5.0 is its impact severity (EG Severity), not escalated.

EG Severity
5.0 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v2.0 · CVSS v2.0AV:N/AC:L/Au:N/C:P/I:N/A:N
EG Likelihood
85% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). 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

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2009

Last Modified

April 23, 2026

References (11)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
wordpress—
  • every version up to 2.8.3-1: fixed in 2.8.3-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
wordpress—
  • every version up to 2.8.3-1: fixed in 2.8.3-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
wordpress—
  • every version up to 2.8.3-1: fixed in 2.8.3-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
wordpress—
  • every version up to 2.8.3-1: fixed in 2.8.3-1
—

Data Freshness Timeline

(refreshed 6× in last 7d / 18× 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 88 of 100 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. 12 repeat rows among the latest 100 are merged into the row they repeat. The 12 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-25 20:23 UTCEG score recompute
  2. 2026-10-25 16:25 UTCEPSS rescoreEPSS 85% · 99th percentile
  3. 2026-10-24 21:55 UTCOSV refresh
  4. 2026-10-22 16:25 UTCEPSS rescoreEPSS 85% · 99th percentile
  5. 2026-10-21 16:25 UTCEPSS rescoreEPSS 85% · 99th percentile
  6. 2026-10-20 16:25 UTCEPSS rescoreEPSS 85% · 99th percentile
  7. 2026-10-18 11:43 UTCEG score recompute
  8. 2026-10-17 16:26 UTCEPSS rescoreEPSS 85% · 99th percentile
  9. 2026-10-14 16:26 UTCEPSS rescoreEPSS 85% · 99th percentile
  10. 2026-10-13 16:26 UTCEPSS rescoreEPSS 85% · 99th percentile
  11. 2026-10-12 21:45 UTCEG score recompute
  12. 2026-10-12 01:53 UTCEG score recompute
  13. 2026-10-09 20:00 UTCEPSS rescoreEPSS 85% · 99th percentile
  14. 2026-10-08 16:33 UTCEPSS rescoreEPSS 85% · 99th percentile
  15. 2026-10-07 23:37 UTCEPSS rescoreEPSS 85% · 99th percentile
  16. 2026-10-05 17:37 UTCEPSS rescoreEPSS 85% · 99th percentile
  17. 2026-10-01 02:40 UTCOSV refresh
  18. 2026-09-29 07:59 UTCEG score recompute
  19. 2026-09-24 13:57 UTCEPSS rescoreEPSS 85% · 99th percentile
  20. 2026-09-12 05:53 UTCOSV refresh
  21. 2026-09-10 09:24 UTCEPSS rescoreEPSS 85% · 99th percentile
  22. 2026-09-06 13:41 UTCEPSS rescoreEPSS 85% · 99th percentile
  23. 2026-09-05 15:22 UTCEPSS rescoreEPSS 85% · 99th percentile
  24. 2026-09-04 13:55 UTCEPSS rescoreEPSS 85% · 99th percentile
  25. 2026-08-28 21:34 UTCEPSS rescoreEPSS 85% · 99th percentile
Show 63 more
  1. 2026-08-27 14:19 UTCEPSS rescoreEPSS 85% · 99th percentile
  2. 2026-08-25 13:43 UTCEPSS rescoreEPSS 85% · 99th percentile
  3. 2026-08-24 11:42 UTCOSV refresh
  4. 2026-08-19 16:58 UTCEPSS rescoreEPSS 85% · 99th percentile
  5. 2026-08-08 07:49 UTCOSV refresh
  6. 2026-07-30 16:22 UTCEPSS rescoreEPSS 85% · 99th percentile
  7. 2026-07-26 13:38 UTCEG score recomputeAssessed again: 5.0 MEDIUM
  8. 2026-07-24 14:12 UTCEPSS rescoreEPSS 85% · 99th percentile
  9. 2026-07-23 01:06 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  10. 2026-07-23 01:05 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  11. 2026-07-23 01:04 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  12. 2026-07-23 01:03 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  13. 2026-07-23 01:02 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  14. 2026-07-23 01:02 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  15. 2026-07-23 01:01 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  16. 2026-07-23 00:59 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  17. 2026-07-23 00:58 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  18. 2026-07-23 00:57 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  19. 2026-07-23 00:56 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  20. 2026-07-23 00:55 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  21. 2026-07-23 00:54 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  22. 2026-07-23 00:53 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  23. 2026-07-23 00:52 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  24. 2026-07-23 00:51 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  25. 2026-07-23 00:50 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  26. 2026-07-23 00:49 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  27. 2026-07-23 00:48 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  28. 2026-07-23 00:47 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  29. 2026-07-23 00:46 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  30. 2026-07-23 00:44 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  31. 2026-07-23 00:43 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  32. 2026-07-23 00:43 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  33. 2026-07-23 00:42 UTCEG score recompute
  34. 2026-07-23 00:42 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  35. 2026-07-23 00:40 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  36. 2026-07-23 00:37 UTCGHSA enrichmentGHSA-4643-w74c-m4wv
  37. 2026-07-23 00:37 UTCEG score recompute▼ 9.00
  38. 2026-07-23 00:04 UTCEG score recompute
  39. 2026-07-22 21:43 UTCEG score recompute
  40. 2026-07-22 14:03 UTCEPSS rescoreEPSS 85% · 99th percentile
  41. 2026-07-20 17:03 UTCEPSS rescoreEPSS 85% · 99th percentile
  42. 2026-07-18 09:59 UTCEPSS rescoreEPSS 85% · 99th percentile
  43. 2026-07-15 16:54 UTCEPSS rescoreEPSS 85% · 99th percentile
  44. 2026-07-13 06:07 UTCEPSS rescoreEPSS 85% · 99th percentile
  45. 2026-07-09 19:04 UTCEPSS rescoreEPSS 85% · 99th percentile
  46. 2026-07-07 17:12 UTCOSV refresh
  47. 2026-07-05 02:26 UTCEPSS rescoreEPSS 85% · 99th percentile
  48. 2026-07-01 15:02 UTCEPSS rescoreEPSS 85% · 99th percentile
  49. 2026-06-28 04:52 UTCEPSS rescoreEPSS 85% · 99th percentile
  50. 2026-06-25 13:46 UTCEPSS rescoreEPSS 85% · 99th percentile
  51. 2026-06-23 21:29 UTCEPSS rescoreEPSS 85% · 99th percentile
  52. 2026-06-19 04:43 UTCOSV refresh
  53. 2026-06-17 17:49 UTCEPSS rescoreEPSS 85% · 99th percentile
  54. 2026-06-15 17:44 UTCEPSS rescoreEPSS 85% · 99th percentile
  55. 2026-06-13 22:57 UTCEPSS rescoreEPSS 85% · 99th percentile
  56. 2026-06-12 23:08 UTCEPSS rescoreEPSS 85% · 99th percentile
  57. 2026-06-10 22:14 UTCEPSS rescoreEPSS 85% · 99th percentile
  58. 2026-06-10 13:17 UTCEPSS rescoreEPSS 85% · 99th percentile
  59. 2026-06-08 14:13 UTCEPSS rescoreEPSS 85% · 99th percentile
  60. 2026-06-06 13:44 UTCEPSS rescoreEPSS 85% · 99th percentile
  61. 2026-06-05 22:44 UTCEPSS rescoreEPSS 85% · 99th percentile
  62. 2026-05-31 22:28 UTCEPSS rescoreEPSS 85% · 99th percentile
  63. 2026-05-30 16:12 UTCEG score recompute

Publicly available exploits

(2 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 1 Exploit-DB entry). Defenders should treat patch urgency accordingly.

  • Metasploitauxiliary/scanner/http/wordpress_login_enum✓ verified
    Published Jun 9, 2010

    WordPress Brute Force and User Enumeration Utility

    Open source ↗
  • Exploit-DBEDB-17702
    Published Aug 20, 2011

    WordPress Plugin Block-Spam-By-Math-Reloaded - Bypass

    Open source ↗

Frequently asked(4)

What is CVE-2009-2335?
CVE-2009-2335 is a medium-severity vulnerability; its CVE record was published on July 10, 2009. WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior…
When was CVE-2009-2335 made public?
CVE-2009-2335 was made public on July 8, 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 July 10, 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-2009-2335 actively exploited?
CVE-2009-2335 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. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 85% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
How do I remediate CVE-2009-2335?
A fix for CVE-2009-2335 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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