CVE-2009-0687The 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,…
- 7.8HighCVSS base score
- 9.5%Exploitation in 30 daysEPSS · top 4.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 3 Exploit-DB entries for it. 2 references of the record are tagged as an exploit.
Show the exploits5
Exploit-DB3 entries
- Multiple Vendor - PF Null Pointer Dereference (Exploit-DB entry) (opens in a new tab)
EDB-ID 8581dos, bsdpublished 30 Apr 2009Verified
- OpenBSD 4.5 - IP datagram Null Pointer Deref Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 8430dos, openbsdpublished 14 Apr 2009Verified
- OpenBSD 4.5 - IP datagrams Remote Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 8406dos, openbsdpublished 13 Apr 2009Verified
References tagged exploit2 references
- 8406 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 8581 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By certcc
- 6 months later
· 6 months later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 9.5% · top 4.5% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
References11
- 53608 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- [4.3] 013: RELIABILITY FIX: April 11, 2009 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
- NetBSD-SA2009-001 (opens in a new tab)vendor-advisoryx_refsource_NETBSDx_transferred
- 8406 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- openbsd-packetfilter-dos(49837) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt (opens in a new tab)x_refsource_MISCx_transferred
- 20090413 OpenBSD 4.3 up to OpenBSD-current: PF null pointer dereference - remote DoS (kernel panic) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 8581 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- [4.4] 013: RELIABILITY FIX: April 11, 2009 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
- ADV-2009-1015 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- [4.5] 002: RELIABILITY FIX: April 11, 2009 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0687 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-0687)Record last updated .