What is CVE-2007-5365?

CVE-2007-5365 is a vulnerability in OpenBSD, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2007-10-11.

Is CVE-2007-5365 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in OpenBSD

CVE-2007-5365

Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD 4.0 through 4.2, and some other dhcpd implementations based on ISC dhcp-2, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a DHCP request specifying a maximum message size smaller than the minimum IP MTU.

Vulnerability class: Buffer Overflow

Published 2007-10-11 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 7.2 (High). Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.803 (99.6th percentile), scored 2026-10-29.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.803 · newest: 0.803 · change: 0.000

Affected products

OpenBSD — versions 4.0, 4.1, 4.2
Sun Opensolaris — versions snv_01, snv_02, snv_03
Sun Solaris — versions 8.0, 9.0, 10.0
Debian Linux — versions 3.1, 4.0
Red Hat Enterprise Linux — versions 2.1
Red Hat Linux Advanced Workstation — versions 2.1
Ubuntu Linux — versions 6.06, 6.10, 7.04

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

secunia.com/advisories/27338 (Vendor Advisory, third-party-advisory)
secunia.com/advisories/27350 (Vendor Advisory, third-party-advisory)
www.vupen.com/english/advisories/2008/3088 (vdb-entry, Vendor Advisory)
www.exploit-db.com/exploits/4601 (exploit)
www.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/dhcpd/options.c (Patch)
bugs.debian.org/cgi-bin/bugreport.cgi
www.openbsd.org/errata42.html (vendor-advisory, Patch)
www.securityfocus.com/bid/25984 (Patch, vdb-entry)
www.securityfocus.com/archive/1/483230/100/100/threaded (mailing-list)
exchange.xforce.ibmcloud.com/vulnerabilities/37045 (vdb-entry)

Frequently asked questions

What is CVE-2007-5365?: CVE-2007-5365 is a vulnerability in OpenBSD, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2007-10-11.
Is CVE-2007-5365 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.