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Fencer Vulns
medium 5.0

CVE-2009-1574 json

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packet…

published 2009-05-06 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1570

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.6%
EPSS 11.6% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote attackers to cause a denial of service (crash) via crafted fragmented packets without a payload, which triggers a NULL pointer dereference.

Patch / fix

  • ipsec-tools RHEL 5 0.6.5-13.el5_3.1

red hat advisories RHSA-2009:1036

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-1574 updated cvss 5.0

ipsec-tools: racoon NULL dereference in fragmentation code

  • Red Hat Enterprise Linux (v. 5 server) ipsec-tools 0.6.5-13.el5_3.1 Red Hat Enterprise Linux Desktop (v. 5 client) ipsec-tools 0.6.5-13.el5_3.1
    fixed: vendor fix RHSA-2009:1036

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-8669)

Exploit prediction

11.63% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-8669 IPsec-Tools < 0.7.2 (racoon frag-isakmp) - Multiple Remote Denial of Service Vulnerabilities (PoC) dos, 2009-05-13
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=497990 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.