CVE-2007-0774

HIGHCVSS v2 · 7.57.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — 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: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 81.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Weaponized
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 82%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 82%CVSS v2: 7.5Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

Stack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a URI worker map routine.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5(low)
EG Risk
71(Track)
EG Risk 71/100SSVC: 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
Severity75% × 45%
Exploitation82% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
82%
EPSS %ILE
100%
KEV
Not listed

Published

March 4, 2007

Last Modified

April 23, 2026

References (50)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmod_jk-0:1.2.20-1jpp_1rh2007-04-12redhat
redhatmod_jk-0:1.2.20-1.el4s1.22007-03-02redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libapache-mod-jk—1:1.2.21-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libapache-mod-jk—1:1.2.21-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libapache-mod-jk—1:1.2.21-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libapache-mod-jk—1:1.2.21-1—

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 1× in last 7d / 7× 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. 2026-09-18 19:20 UTCEPSS rescore
  2. 2026-09-15 06:55 UTCOSV refresh
  3. 2026-09-12 14:54 UTCEPSS rescore
  4. 2026-09-10 09:24 UTCEPSS rescore
  5. 2026-09-05 15:22 UTCEPSS rescore
  6. 2026-09-04 04:59 UTCEPSS rescore
  7. 2026-08-27 06:34 UTCOSV refresh
  8. 2026-08-10 19:38 UTCOSV refresh
  9. 2026-08-06 13:41 UTCEPSS rescore
  10. 2026-08-03 10:28 UTCEPSS rescore
  11. 2026-07-26 13:31 UTCEG score recompute▲ 7.50
  12. 2026-07-25 20:01 UTCOSV refresh
  13. 2026-07-24 14:11 UTCEPSS rescore
  14. 2026-07-23 00:52 UTCEG score recompute
  15. 2026-07-23 00:32 UTCEG score recompute▼ 8.40
  16. 2026-07-22 23:57 UTCEG score recompute▲ 8.40
  17. 2026-07-22 21:36 UTCEG score recompute▼ 9.00
  18. 2026-07-22 14:03 UTCEPSS rescore
  19. 2026-07-21 15:19 UTCEPSS rescore
  20. 2026-07-20 17:02 UTCEPSS rescore
  21. 2026-07-16 16:58 UTCEPSS rescore
  22. 2026-07-15 01:55 UTCEPSS rescore
  23. 2026-07-13 06:07 UTCEPSS rescore
  24. 2026-07-13 06:07 UTCEPSS rescore
  25. 2026-07-08 14:45 UTCOSV refresh
Show 51 more
  1. 2026-07-06 02:19 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-02 14:00 UTCEPSS rescore
  4. 2026-07-01 15:02 UTCEPSS rescore
  5. 2026-07-01 15:02 UTCEPSS rescore
  6. 2026-06-28 04:52 UTCEPSS rescore
  7. 2026-06-25 13:46 UTCEPSS rescore
  8. 2026-06-25 13:46 UTCEPSS rescore
  9. 2026-06-23 21:29 UTCEPSS rescore
  10. 2026-06-23 21:29 UTCEPSS rescore
  11. 2026-06-21 01:56 UTCEPSS rescore
  12. 2026-06-21 01:56 UTCEPSS rescore
  13. 2026-06-21 01:56 UTCEPSS rescore
  14. 2026-06-20 02:42 UTCOSV refresh
  15. 2026-06-16 17:49 UTCEPSS rescore
  16. 2026-06-16 17:49 UTCEPSS rescore
  17. 2026-06-15 17:44 UTCEPSS rescore
  18. 2026-06-13 22:57 UTCEPSS rescore
  19. 2026-06-13 22:57 UTCEPSS rescore
  20. 2026-06-12 23:08 UTCEPSS rescore
  21. 2026-06-08 14:13 UTCEPSS rescore
  22. 2026-06-07 15:21 UTCEPSS rescore
  23. 2026-06-07 15:21 UTCEPSS rescore
  24. 2026-06-06 13:44 UTCEPSS rescore
  25. 2026-06-06 13:44 UTCEPSS rescore
  26. 2026-06-05 22:44 UTCEPSS rescore
  27. 2026-06-05 22:44 UTCEPSS rescore
  28. 2026-06-05 06:07 UTCEPSS rescore
  29. 2026-06-04 13:09 UTCEPSS rescore
  30. 2026-06-04 13:09 UTCEPSS rescore
  31. 2026-05-31 03:56 UTCEG score recompute
  32. 2026-05-31 03:56 UTCVendor advisory
  33. 2026-05-31 03:56 UTCGHSA enrichment
  34. 2026-05-31 00:13 UTCEPSS rescore
  35. 2026-05-31 00:13 UTCEPSS rescore
  36. 2026-05-29 13:40 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
  38. 2026-05-28 13:42 UTCEPSS rescore
  39. 2026-05-27 13:37 UTCEPSS rescore
  40. 2026-05-27 13:37 UTCEPSS rescore
  41. 2026-05-26 07:16 UTCEPSS rescore
  42. 2026-05-26 07:16 UTCEPSS rescore
  43. 2026-05-26 07:16 UTCEPSS rescore
  44. 2026-05-24 16:42 UTCEPSS rescore
  45. 2026-05-22 21:15 UTCEPSS rescore
  46. 2026-05-22 21:15 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-21 01:06 UTCOSV refresh
  49. 2026-05-20 22:36 UTCEPSS rescore
  50. 2026-05-18 21:29 UTCEPSS rescore
  51. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(3 references)

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

  • Exploit-DBEDB-16798✓ verified
    First seen Jul 25, 2010

    Apache Tomcat mod_jk 1.2.20 - Remote Buffer Overflow (Metasploit)

    Open source ↗
  • Exploit-DBEDB-4162✓ verified
    First seen Jul 8, 2007

    Apache Tomcat Connector mod_jk - 'exec-shield' Remote Overflow

    Open source ↗
  • Metasploitexploit/windows/http/apache_modjk_overflow✓ verified
    First seen Mar 2, 2007

    Apache mod_jk 1.2.20 Buffer Overflow

    Open source ↗

Related CVEs(same product)

Frequently asked(4)

What is CVE-2007-0774?
CVE-2007-0774 is a high vulnerability published on March 4, 2007. Stack-based buffer overflow in the mapuritoworker function (native/common/jkuriworkermap.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a…
When was CVE-2007-0774 disclosed?
CVE-2007-0774 was first published in the National Vulnerability Database on March 4, 2007, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2007-0774 actively exploited?
CVE-2007-0774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82% probability of exploitation in the next 30 days, which ranks it in the top 0.4% of all scored CVEs.
How do I remediate CVE-2007-0774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-0774, 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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