CVE-2008-3659

What it is

Buffer overflow in the memnstr function in PHP 4.4.x before 4.4.9 and PHP 5.6 through 5.2.6 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via the delimiter argument to the explode function. NOTE: the scope of this issue is limited since most applications would not use an attacker-controlled delimiter, but local attacks against safe_mode are feasible.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

6.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2008-08-15 00:41 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:56 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 6.0% in the next 30 days (EPSS).
• Severity: 6.4 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2008-08-15 00:41 UTC

Last modified

2026-06-16 22:56 UTC

Exploit probability

6.0% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• PHP 4.4.0
• PHP 4.4.1
• PHP 4.4.2
• PHP 4.4.3
• PHP 4.4.4
• PHP 4.4.5
• PHP 4.4.6
• PHP 4.4.7

Attack profile CVSS 2.0 · 6.4

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

Is it in your code?

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