CVE-2009-2412

What it is

Multiple integer overflows in the Apache Portable Runtime (APR) library and the Apache Portable Utility library (aka APR-util) 0.9.x and 1.3.x allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors that trigger crafted calls to the (1) allocator_alloc or (2) apr_palloc function in memory/unix/apr_pools.c in APR; or crafted calls to the (3) apr_rmm_malloc, (4) apr_rmm_calloc, or (5) apr_rmm_realloc function in misc/apr_rmm.c in APR-util; leading to buffer overflows. NOTE: some of these details are obtained from third party information.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

13.8% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

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

Timeline

1. 2009-07-09 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2009-08-06 15:30 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-16 23:09 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 13.8% in the next 30 days (EPSS).
• Severity: 10.0 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2009-08-06 15:30 UTC

Last modified

2026-06-16 23:09 UTC

Exploit probability

13.8% · EPSS, next 30 days

Weakness

CWE-189

Record status

Modified

Affected

• Apache apr-util 0.9.1
• Apache apr-util 0.9.2
• Apache apr-util 0.9.2-dev
• Apache apr-util 0.9.3
• Apache apr-util 0.9.3-dev
• Apache apr-util 0.9.4
• Apache apr-util 0.9.5
• Apache apr-util 0.9.6

Attack profile CVSS 2.0 · 10.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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