CVE-2007-1711

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 7.6% 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
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS v2: 6.8Exploit: Exploit-DB (verified) · public exploitExposed: 0

A fix is available — apply it.

Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007).

CVSS v2.0 (legacy)
6.8MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
6.8(low)
EG Risk
61(Track)
EG Risk 61/100SSVC: 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
Severity68% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
94%
KEV
Not listed

Published

March 27, 2007

Last Modified

April 23, 2026

References (52)

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatstronghold-php-0:4.1.2-152007-04-20redhat
redhatphp-0:4.1.2-2.172007-04-16redhat
redhatphp-0:4.3.9-3.22.42007-04-16redhat

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

(3 across 2 ecosystems)
Debian:4.0(2)
PackageVulnerable rangeFixed inDependents
php46:4.4.4-8+etch16:4.4.4-8+etch2—
php55.2.0-8+etch15.2.0-8+etch3—
Debian:3.1(1)
PackageVulnerable rangeFixed inDependents
php44:4.3.10-15, 4:4.3.10-16, 4:4.3.10-17, 4:4.3.10-18, 4:4.3.10-194:4.3.10-20—

All Vendor Advisories

(3)

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 / 8× 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 03:04 UTCEPSS rescore
  3. 2026-09-12 14:54 UTCEPSS rescore
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  8. 2026-08-30 01:14 UTCEPSS rescore
  9. 2026-08-08 16:30 UTCEPSS rescore
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  11. 2026-08-06 13:41 UTCEPSS rescore
  12. 2026-08-05 19:11 UTCEPSS rescore
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  14. 2026-08-03 10:28 UTCEPSS rescore
  15. 2026-07-28 15:30 UTCEPSS rescore
  16. 2026-07-26 13:32 UTCEG score recompute▲ 6.80
  17. 2026-07-25 14:11 UTCEPSS rescore
  18. 2026-07-24 14:11 UTCEPSS rescore
  19. 2026-07-23 00:53 UTCEG score recompute
  20. 2026-07-23 00:32 UTCEG score recompute
  21. 2026-07-22 23:57 UTCEG score recompute
  22. 2026-07-22 21:37 UTCEG score recompute
  23. 2026-07-22 14:03 UTCEPSS rescore
  24. 2026-07-21 15:19 UTCEPSS rescore
  25. 2026-07-20 17:02 UTCEPSS rescore
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  1. 2026-07-16 16:58 UTCEPSS rescore
  2. 2026-07-15 16:54 UTCEPSS rescore
  3. 2026-07-15 16:54 UTCEPSS rescore
  4. 2026-07-15 01:55 UTCEPSS rescore
  5. 2026-07-13 22:25 UTCEPSS rescore
  6. 2026-07-08 15:09 UTCEPSS rescore
  7. 2026-07-06 02:19 UTCEPSS rescore
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  10. 2026-07-04 06:27 UTCEPSS rescore
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  15. 2026-06-30 23:18 UTCEPSS rescore
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  18. 2026-06-28 14:02 UTCEPSS rescore
  19. 2026-06-28 04:52 UTCEPSS rescore
  20. 2026-06-25 13:46 UTCEPSS rescore
  21. 2026-06-25 13:46 UTCEPSS rescore
  22. 2026-06-24 14:02 UTCEPSS rescore
  23. 2026-06-24 14:01 UTCEPSS rescore
  24. 2026-06-23 21:29 UTCEPSS rescore
  25. 2026-06-23 21:29 UTCEPSS rescore
  26. 2026-06-21 01:56 UTCEPSS rescore
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  29. 2026-06-18 17:49 UTCEPSS rescore
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  31. 2026-06-17 17:49 UTCEPSS rescore
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  36. 2026-06-14 23:13 UTCEPSS rescore
  37. 2026-06-13 22:57 UTCEPSS rescore
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  39. 2026-06-12 23:08 UTCEPSS rescore
  40. 2026-06-07 15:21 UTCEPSS rescore
  41. 2026-06-07 15:21 UTCEPSS rescore
  42. 2026-06-06 13:44 UTCEPSS rescore
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  44. 2026-06-05 22:44 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
  46. 2026-06-04 13:09 UTCEPSS rescore
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  48. 2026-06-02 20:10 UTCEPSS rescore
  49. 2026-06-02 20:10 UTCEPSS rescore
  50. 2026-06-01 13:49 UTCEPSS rescore
  51. 2026-06-01 13:49 UTCEPSS rescore
  52. 2026-05-31 22:28 UTCEPSS rescore
  53. 2026-05-31 22:28 UTCEPSS rescore
  54. 2026-05-31 03:33 UTCEG score recompute
  55. 2026-05-31 03:33 UTCVendor advisory
  56. 2026-05-31 03:33 UTCGHSA enrichment
  57. 2026-05-31 00:13 UTCEPSS rescore
  58. 2026-05-31 00:13 UTCEPSS rescore
  59. 2026-05-29 13:40 UTCEPSS rescore
  60. 2026-05-28 13:42 UTCEPSS rescore
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  62. 2026-05-27 13:37 UTCEPSS rescore
  63. 2026-05-27 13:37 UTCEPSS rescore
  64. 2026-05-26 13:41 UTCEPSS rescore
  65. 2026-05-26 13:41 UTCEPSS rescore
  66. 2026-05-24 16:42 UTCEPSS rescore
  67. 2026-05-21 22:38 UTCEPSS rescore
  68. 2026-05-20 22:36 UTCEPSS rescore
  69. 2026-05-20 11:20 UTCEPSS rescore
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  71. 2026-05-18 21:29 UTCEPSS rescore
  72. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-3586✓ verified
    First seen Mar 27, 2007

    PHP 4.4.5/4.4.6 - 'session_decode()' Double-Free (PoC)

    Open source ↗

Related CVEs(same product + same vendor)

Frequently asked(4)

What is CVE-2007-1711?
CVE-2007-1711 is a medium vulnerability published on March 27, 2007. Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701…
When was CVE-2007-1711 disclosed?
CVE-2007-1711 was first published in the National Vulnerability Database on March 27, 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-2007-1711 actively exploited?
CVE-2007-1711 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 5.7% of all scored CVEs.
How do I remediate CVE-2007-1711?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-1711, 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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