CVE-2009-0687

Exp

The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through 4.5, NetBSD 5.0 before RC3, MirOS 10 and earlier, and MidnightBSD 0.3-current allows remote attackers to cause a denial of service (panic) via crafted IP packets that trigger a NULL pointer dereference during translation, related to an IPv4 packet with an ICMPv6 payload.

Published: 2009-08-11 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0687 is rated High Exploit Risk (78.4/100): CVSS High severity, with high exploitation likelihood (EPSS 12.89%, 94th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2009-0687

EDB-ID Source Kind Published Link
8581 exploit_db edb 2009-04-30 Exploit-DB ↗
8430 exploit_db edb 2009-04-14 Exploit-DB ↗
8406 exploit_db edb 2009-04-13 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-0687

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-26 13.58% 12.89% -0.69%
2 2025-10-11 12.33% 13.58% +1.25%
3 2025-03-30 — 12.33% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0687

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2009-0687

Affected software / configurations for CVE-2009-0687

Vendor Product Version Raw CPE
midnightbsd midnightbsd 0.3-current cpe:2.3:o:midnightbsd:midnightbsd:0.3-current:*:*:*:*:*:*:*
mirbsd miros <= 10 cpe:2.3:o:mirbsd:miros:*:*:*:*:*:*:*:*
netbsd netbsd 5.0 cpe:2.3:o:netbsd:netbsd:5.0:*:*:*:*:*:*:*
openbsd openbsd 4.2 cpe:2.3:o:openbsd:openbsd:4.2:*:*:*:*:*:*:*
openbsd openbsd 4.3 cpe:2.3:o:openbsd:openbsd:4.3:*:*:*:*:*:*:*
openbsd openbsd 4.4 cpe:2.3:o:openbsd:openbsd:4.4:*:*:*:*:*:*:*
openbsd openbsd 4.5 cpe:2.3:o:openbsd:openbsd:4.5:*:*:*:*:*:*:*

References for CVE-2009-0687

cvelogic Threat Intelligence