CVE-2009-0687

highpriority · track · 44EPSS 0.095 · 95 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · functional

Likely / severe?

9.52% (95th) EPSS

CVSS 7.8 · high

Is it mine?

8 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v2.07highAV:N/AC:L/Au:N/C:N/I:N/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimary

exploits (3)

Public proof-of-concept and weaponised exploit code.

EDB-8406OpenBSD 4.5 - IP datagrams Remote Denial of Servicefunctional · exploit_db
EDB-8430OpenBSD 4.5 - IP datagram Null Pointer Deref Denial of Servicefunctional · exploit_db
EDB-8581Multiple Vendor - PF Null Pointer Dereferencefunctional · exploit_db

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
midnightbsd midnightbsd= 0.3-currentnvdUScpe:2.3:o:midnightbsd:midnightbsd:*:*:*:*:*:*:*:*
mirbsd miros≤ 10nvdUScpe:2.3:o:mirbsd:miros:*:*:*:*:*:*:*:*
netbsd netbsd= 5.0nvdUScpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 4.2nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 4.3nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 4.4nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 4.5nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-08-11modified 2026-06-16

related (3,726)

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+3721 more

references (22)

External citations — patches, advisories, analysis.

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