CVE-2007-1286

NONECVSS 0.09.0▲
EchelonGraph scoreLOW confidence

Score elevated to 9.0 because EPSS predicts 86% probability of exploitation within the next 30 days (top 0.6% of all CVEs). Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss
Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 40%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

Integer overflow in PHP 4.4.4 and earlier allows remote context-dependent attackers to execute arbitrary code via a long string to the unserialize function, which triggers the overflow in the ZVAL reference counter.

CVSS v3
—
EG Score
9.0(low)
EPSS
98.5%
KEV
Not listed

Published

March 6, 2007

Last Modified

April 23, 2026

References (64)

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.

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 4× in last 7d / 29× 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. 2026-07-13 22:25 UTCEPSS rescore
  2. 2026-07-13 06:07 UTCEPSS rescore
  3. 2026-07-13 06:07 UTCEPSS rescore
  4. 2026-07-08 15:09 UTCEPSS rescore
  5. 2026-07-05 02:26 UTCEPSS rescore
  6. 2026-07-02 14:00 UTCEPSS rescore
  7. 2026-07-01 15:02 UTCEPSS rescore
  8. 2026-07-01 15:02 UTCEPSS rescore
  9. 2026-06-30 23:18 UTCEPSS rescore
  10. 2026-06-28 14:02 UTCEPSS rescore
  11. 2026-06-28 04:52 UTCEPSS rescore
  12. 2026-06-25 13:46 UTCEPSS rescore
  13. 2026-06-25 13:46 UTCEPSS rescore
  14. 2026-06-24 14:02 UTCEPSS rescore
  15. 2026-06-24 14:01 UTCEPSS rescore
  16. 2026-06-23 21:29 UTCEPSS rescore
  17. 2026-06-23 21:29 UTCEPSS rescore
  18. 2026-06-21 01:56 UTCEPSS rescore
  19. 2026-06-21 01:56 UTCEPSS rescore
  20. 2026-06-21 01:56 UTCEPSS rescore
  21. 2026-06-19 19:22 UTCEPSS rescore
  22. 2026-06-19 19:22 UTCEPSS rescore
  23. 2026-06-18 17:49 UTCEPSS rescore
  24. 2026-06-18 17:49 UTCEPSS rescore
  25. 2026-06-17 17:49 UTCEPSS rescore
Show 31 more
  1. 2026-06-17 17:49 UTCEPSS rescore
  2. 2026-06-16 17:49 UTCEPSS rescore
  3. 2026-06-16 17:49 UTCEPSS rescore
  4. 2026-06-15 17:44 UTCEPSS rescore
  5. 2026-06-13 22:57 UTCEPSS rescore
  6. 2026-06-13 22:57 UTCEPSS rescore
  7. 2026-06-12 23:08 UTCEPSS rescore
  8. 2026-06-06 13:44 UTCEPSS rescore
  9. 2026-06-06 13:44 UTCEPSS rescore
  10. 2026-06-05 22:44 UTCEPSS rescore
  11. 2026-06-05 22:44 UTCEPSS rescore
  12. 2026-06-02 20:10 UTCEPSS rescore
  13. 2026-06-02 20:10 UTCEPSS rescore
  14. 2026-06-01 13:49 UTCEPSS rescore
  15. 2026-06-01 13:49 UTCEPSS rescore
  16. 2026-05-31 03:54 UTCEG score recompute
  17. 2026-05-31 03:54 UTCVendor advisory
  18. 2026-05-31 03:54 UTCGHSA enrichment
  19. 2026-05-31 00:13 UTCEPSS rescore
  20. 2026-05-31 00:13 UTCEPSS rescore
  21. 2026-05-29 13:40 UTCEPSS rescore
  22. 2026-05-28 13:42 UTCEPSS rescore
  23. 2026-05-28 13:42 UTCEPSS rescore
  24. 2026-05-26 13:41 UTCEPSS rescore
  25. 2026-05-26 13:41 UTCEPSS rescore
  26. 2026-05-22 21:15 UTCEPSS rescore
  27. 2026-05-22 21:15 UTCEPSS rescore
  28. 2026-05-22 21:15 UTCEPSS rescore
  29. 2026-05-20 22:36 UTCEPSS rescore
  30. 2026-05-18 21:29 UTCEPSS rescore
  31. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-16310✓ verified
    First seen Sep 20, 2010

    PHP 4 - Unserialize() ZVAL Reference Counter Overflow (Cookie) (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/php/php_unserialize_zval_cookie✓ verified
    First seen Mar 4, 2007

    PHP 4 unserialize() ZVAL Reference Counter Overflow (Cookie)

    Open source ↗
  • Exploit-DBEDB-3396✓ verified
    First seen Mar 2, 2007

    PHP 4.4.4 - 'Unserialize()' ZVAL Reference Counter Overflow (PoC)

    Open source ↗
  • Exploit-DBEDB-9939✓ verified
    First seen Mar 1, 2007

    PHP < 4.5.0 - Unserialize Overflow (Metasploit)

    Open source ↗

Frequently asked(4)

What is CVE-2007-1286?
CVE-2007-1286 is a none vulnerability published on March 6, 2007. Integer overflow in PHP 4.4.4 and earlier allows remote context-dependent attackers to execute arbitrary code via a long string to the unserialize function, which triggers the overflow in the ZVAL reference counter.
When was CVE-2007-1286 disclosed?
CVE-2007-1286 was first published in the National Vulnerability Database on March 6, 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-2007-1286 actively exploited?
CVE-2007-1286 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2007-1286?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-1286, 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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