CVE-2009-1251

CVE-2009-1251 is a critical-severity vulnerability in Openafs with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Critical (CVSS 2.0 base score 10.0)
• EPSS exploit prediction: 6% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Openafs
• Published: 2009-04-09
• Last modified: 2026-06-16

Description

Heap-based buffer overflow in the cache manager in the client in OpenAFS 1.0 through 1.4.8 and 1.5.0 through 1.5.58 on Unix platforms allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via an RX response containing more data than specified in a request, related to use of XDR arrays.

Frequently asked questions

What is CVE-2009-1251?

Heap-based buffer overflow in the cache manager in the client in OpenAFS 1.0 through 1.4.8 and 1.5.0 through 1.5.58 on Unix platforms allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via an RX response containing more data than specified in a request, related to use of XDR arrays.

How severe is CVE-2009-1251?

CVE-2009-1251 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-1251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1251?

CVE-2009-1251 primarily affects Openafs. In total, 72 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1251?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-1251 published?

CVE-2009-1251 was published on 2009-04-09 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/34655
• http://secunia.com/advisories/34684
• http://secunia.com/advisories/42896
• http://security.gentoo.org/glsa/glsa-201101-05.xml
• http://www.debian.org/security/2009/dsa-1768
• http://www.mandriva.com/security/advisories?name=MDVSA-2009:099
• http://www.openafs.org/security/OPENAFS-SA-2009-001.txt
• http://www.openafs.org/security/openafs-sa-2009-001.patch
• http://www.securityfocus.com/bid/34407
• http://www.vupen.com/english/advisories/2009/0984
• http://www.vupen.com/english/advisories/2011/0117

Affected products (72)

• cpe:2.3:o:unix:unix:*:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.0.4a:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.1.1a:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.2a:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.2b:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.10:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.11:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.2.13:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.70:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.74:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.77:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.3.81:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:openafs:openafs:1.4.6:*:*:*:*:*:*:*

More vulnerabilities in Openafs

• CVE-2018-16947 — Critical (CVSS 9.8): An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. The backup tape controller (butc) process…
• CVE-2024-10397 — High (CVSS 7.8): A malicious server can crash the OpenAFS cache manager and other client utilities, and possibly execute arbitrary code.
• CVE-2024-10394 — High (CVSS 7.8): A local user can bypass the OpenAFS PAG (Process Authentication Group) throttling mechanism in Unix clients, allowing…
• CVE-2015-8312 — High (CVSS 7.8): Off-by-one error in afs_pioctl.c in OpenAFS before 1.6.16 might allow local users to cause a denial of service (memory…
• CVE-2009-1250 — High (CVSS 7.8): The cache manager in the client in OpenAFS 1.0 through 1.4.8 and 1.5.0 through 1.5.58, and IBM AFS 3.6 before Patch 19,…
• CVE-2019-18602 — High (CVSS 7.5): OpenAFS before 1.6.24 and 1.8.x before 1.8.5 is prone to an information disclosure vulnerability because uninitialized…

All CVEs affecting Openafs →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

• CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
• CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
• CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
• CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
• CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →