CVE-2007-1286

mediumpriority · attend · 51EPSS 0.409 · 99 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · functional

Likely / severe?

40.9% (99th) EPSS

CVSS 6.8 · medium

Is it mine?

2 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:P/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USLLM-inferred

exploits (4)

Public proof-of-concept and weaponised exploit code.

EDB-16310PHP 4 - Unserialize() ZVAL Reference Counter Overflow (Cookie) (Metasploit)functional · exploit_db
EDB-3396PHP 4.4.4 - 'Unserialize()' ZVAL Reference Counter Overflow (PoC)functional · exploit_db
EDB-9939PHP < 4.5.0 - Unserialize Overflow (Metasploit)functional · exploit_db
exploit/multi/php/php_unserialize_zval_cookiePHP 4 unserialize() ZVAL Reference Counter Overflow (Cookie)PoC · metasploit

affected products (2)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
php php≤ 4.4.4nvdUScpe:2.3:a:php:php:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2007-03-06modified 2026-06-16

references (64)

External citations — patches, advisories, analysis.

scry

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