CVE-2009-2412

CRITICAL

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 (a...

Affects 2 products across 1 vendor.

BCS7.84
CVSS 2.010.0
EPSS13.8%
Percentile96th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-189: CWE-189
◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2009. A critical vulnerability affects Apache systems (CVE-2009-2412). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2009-GLOBAL-311946-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2009-2412?
This vulnerability was disclosed in 2009. A critical vulnerability affects Apache systems (CVE-2009-2412). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2009-2412?
CVE-2009-2412 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 13.8%.
Is CVE-2009-2412 actively exploited?
No confirmed active exploitation of CVE-2009-2412 as of 2026-09-25.
How do I remediate CVE-2009-2412?
Priority: MEDIUM. Advisory: http://www.securityfocus.com/bid/35949 PSIRT: [email protected]
What systems are affected by CVE-2009-2412?
CVE-2009-2412 affects: Apache, Apache.
Vulnerability Details
CVE IDCVE-2009-2412
BSIDBS-2009-GLOBAL-311946-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2009-08-06
Last Modified2026-06-16
ICS Relevance0%
Weakness (CWE)
CWE-189
SourceNVD
Official Description

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.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: 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-u CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Apache Apr-Util —
Apache Portable Runtime —
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: September 2026 | Threat Age: 6262 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash15faf8937afe5769025ca9997803a1c564a23f99b46db9c12198910159a7b9cac5b11ddf4a34b0d1a0de1b32936dd41fb1796d232a2553b4043593807894edc0
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