CVE-2014-1691

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 42.9% 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.
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 43%CVSS v2: 7.5Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

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

The framework/Util/lib/Horde/Variables.php script in the Util library in Horde before 5.1.1 allows remote attackers to conduct object injection attacks and execute arbitrary PHP code via a crafted serialized object in the _formvars form.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5(low)
EG Risk
64(Track)
EG Risk 64/100SSVC: 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%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
43%
EPSS %ILE
99%
KEV
Not listed

Published

April 1, 2014

Last Modified

May 6, 2026

References (12)

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
php-horde-util—2.3.0-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
php-horde-util—2.3.0-1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
horde3—3.3.8+debian0-3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 16× 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. 2026-08-21 23:44 UTCEPSS rescore
  2. 2026-08-20 22:50 UTCEPSS rescore
  3. 2026-08-19 16:59 UTCEPSS rescore
  4. 2026-08-18 13:43 UTCEPSS rescore
  5. 2026-08-16 14:50 UTCEPSS rescore
  6. 2026-08-16 02:09 UTCEPSS rescore
  7. 2026-08-15 01:25 UTCEPSS rescore
  8. 2026-08-07 16:21 UTCEPSS rescore
  9. 2026-08-07 14:26 UTCOSV refresh
  10. 2026-08-06 13:42 UTCEPSS rescore
  11. 2026-08-01 04:11 UTCEPSS rescore
  12. 2026-07-30 16:23 UTCEPSS rescore
  13. 2026-07-30 01:26 UTCEPSS rescore
  14. 2026-07-28 15:31 UTCEPSS rescore
  15. 2026-07-26 13:50 UTCEG score recompute▲ 7.50
  16. 2026-07-23 14:14 UTCEPSS rescore
  17. 2026-07-23 01:12 UTCEG score recompute▼ 2.10
  18. 2026-07-23 00:15 UTCEG score recompute▲ 2.10
  19. 2026-07-22 21:54 UTCEG score recompute
  20. 2026-07-22 14:04 UTCEPSS rescore
  21. 2026-07-22 06:48 UTCOSV refresh
  22. 2026-07-20 17:03 UTCEPSS rescore
  23. 2026-07-20 17:03 UTCEPSS rescore
  24. 2026-07-19 14:27 UTCEPSS rescore
  25. 2026-07-19 14:27 UTCEPSS rescore
Show 67 more
  1. 2026-07-19 02:25 UTCEPSS rescore
  2. 2026-07-18 10:00 UTCEPSS rescore
  3. 2026-07-16 16:58 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-15 16:54 UTCEPSS rescore
  6. 2026-07-15 01:56 UTCEPSS rescore
  7. 2026-07-13 22:26 UTCEPSS rescore
  8. 2026-07-13 06:08 UTCEPSS rescore
  9. 2026-07-12 05:42 UTCEPSS rescore
  10. 2026-07-09 19:05 UTCEPSS rescore
  11. 2026-07-08 15:10 UTCEPSS rescore
  12. 2026-07-05 01:56 UTCOSV refresh
  13. 2026-07-04 06:27 UTCEPSS rescore
  14. 2026-07-02 15:21 UTCEPSS rescore
  15. 2026-07-01 15:02 UTCEPSS rescore
  16. 2026-06-28 14:03 UTCEPSS rescore
  17. 2026-06-28 04:53 UTCEPSS rescore
  18. 2026-06-28 04:53 UTCEPSS rescore
  19. 2026-06-27 03:05 UTCEPSS rescore
  20. 2026-06-25 13:47 UTCEPSS rescore
  21. 2026-06-25 13:47 UTCEPSS rescore
  22. 2026-06-23 21:30 UTCEPSS rescore
  23. 2026-06-23 21:30 UTCEPSS rescore
  24. 2026-06-22 14:22 UTCEPSS rescore
  25. 2026-06-22 14:22 UTCEPSS rescore
  26. 2026-06-21 01:57 UTCEPSS rescore
  27. 2026-06-21 01:57 UTCEPSS rescore
  28. 2026-06-18 17:49 UTCEPSS rescore
  29. 2026-06-18 17:49 UTCEPSS rescore
  30. 2026-06-17 17:49 UTCEPSS rescore
  31. 2026-06-17 17:49 UTCEPSS rescore
  32. 2026-06-16 17:49 UTCEPSS rescore
  33. 2026-06-16 17:49 UTCEPSS rescore
  34. 2026-06-16 17:49 UTCEPSS rescore
  35. 2026-06-16 13:13 UTCOSV refresh
  36. 2026-06-15 17:44 UTCEPSS rescore
  37. 2026-06-12 23:08 UTCEPSS rescore
  38. 2026-06-11 13:56 UTCEPSS rescore
  39. 2026-06-10 22:15 UTCEPSS rescore
  40. 2026-06-10 13:18 UTCEPSS rescore
  41. 2026-06-07 15:22 UTCEPSS rescore
  42. 2026-06-06 13:45 UTCEPSS rescore
  43. 2026-06-06 13:45 UTCEPSS rescore
  44. 2026-06-05 22:44 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
  46. 2026-06-05 06:08 UTCEPSS rescore
  47. 2026-06-05 06:08 UTCEPSS rescore
  48. 2026-06-04 13:09 UTCEPSS rescore
  49. 2026-06-04 13:09 UTCEPSS rescore
  50. 2026-06-02 20:10 UTCEPSS rescore
  51. 2026-06-02 20:10 UTCEPSS rescore
  52. 2026-06-01 13:49 UTCEPSS rescore
  53. 2026-06-01 13:49 UTCEPSS rescore
  54. 2026-05-31 00:14 UTCEPSS rescore
  55. 2026-05-31 00:14 UTCEPSS rescore
  56. 2026-05-28 19:42 UTCEG score recompute
  57. 2026-05-28 19:42 UTCGHSA enrichment
  58. 2026-05-26 07:16 UTCEPSS rescore
  59. 2026-05-26 07:16 UTCEPSS rescore
  60. 2026-05-24 16:43 UTCEPSS rescore
  61. 2026-05-22 21:15 UTCEPSS rescore
  62. 2026-05-22 21:15 UTCEPSS rescore
  63. 2026-05-22 21:15 UTCEPSS rescore
  64. 2026-05-20 22:37 UTCEPSS rescore
  65. 2026-05-20 22:37 UTCEPSS rescore
  66. 2026-05-18 21:29 UTCEPSS rescore
  67. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

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

  • Exploit-DBEDB-32439✓ verified
    First seen Mar 22, 2014

    Horde Framework - Unserialize PHP Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/unix/webapp/horde_unserialize_exec✓ verified
    First seen Jun 27, 2013

    Horde Framework Unserialize PHP Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2014-1691?
CVE-2014-1691 is a high vulnerability published on April 1, 2014. The framework/Util/lib/Horde/Variables.php script in the Util library in Horde before 5.1.1 allows remote attackers to conduct object injection attacks and execute arbitrary PHP code via a crafted serialized object in the _formvars form.
When was CVE-2014-1691 disclosed?
CVE-2014-1691 was first published in the National Vulnerability Database on April 1, 2014, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-1691 actively exploited?
CVE-2014-1691 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43% probability of exploitation in the next 30 days, which ranks it in the top 1.4% of all scored CVEs.
How do I remediate CVE-2014-1691?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-1691, 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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