CVE-2004-0392: racoon before 20040407b allows remote attackers to cause a denial of service (infinite loop and dropped connec

Q: How do I fix CVE-2004-0392?

racoon: upgrade to newer than 2004-04-07a. Exact commands for each OS are on this page.

Q: Is CVE-2004-0392 being exploited?

CVE-2004-0392 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2004-0392 affect?

CVE-2004-0392 affects racoon. Severity is medium (CVSS 5.0). racoon before 20040407b allows remote attackers to cause a denial of service (infinite loop and dropped connections) via an IKE message with a malformed Generic Payload Header containing invalid (1) "Security Association Next Payload" and (

Q: How urgent is CVE-2004-0392?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2004-0392 is a medium-severity flaw (CVSS 5.0) affecting racoon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

racoon before 20040407b allows remote attackers to cause a denial of service (infinite loop and dropped connections) via an IKE message with a malformed Generic Payload Header containing invalid (1) "Security Association Next Payload" and (2) "RESERVED" fields.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Published	2004-06-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kame

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2004-06-14 04:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

kame racoon UPGRADE

Affected: <= 2004-04-07a

Fixed in: newer than 2004-04-07a

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy racoon || rpm -q racoon || racoon --version

2. UPGRADE to newer than 2004-04-07a (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade racoon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade racoon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2004-0392?

racoon: upgrade to newer than 2004-04-07a. Exact commands for each OS are on this page.

Is CVE-2004-0392 being exploited?

CVE-2004-0392 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2004-0392 affect?

CVE-2004-0392 affects racoon. Severity is medium (CVSS 5.0). racoon before 20040407b allows remote attackers to cause a denial of service (infinite loop and dropped connections) via an IKE message with a malformed Generic Payload Header containing invalid (1) "Security Association Next Payload" and (

How urgent is CVE-2004-0392?

Priority 39/100. No elevated risk signals yet.

Related CVEs

CVE-2005-0398 MEDIUM 5.0 DOWNGRADE DOWNGRADE The KAME racoon daemon in ipsec-tools before 0.5 allows remote attackers to cause a denial of service (crash)
CVE-2004-0607 HIGH 10.0 DOWNGRADE DOWNGRADE The eay_check_x509cert function in KAME Racoon successfully verifies certificates even when OpenSSL validation
CVE-2004-0403 MEDIUM 5.0 UPGRADE Racoon before 20040408a allows remote attackers to cause a denial of service (memory consumption) via an ISAKM
CVE-2004-0164 MEDIUM 5.0 DOWNGRADE KAME IKE daemon (racoon) does not properly handle hash values, which allows remote attackers to delete certifi
CVE-2004-0155 HIGH 7.5 MITIGATE The KAME IKE Daemon Racoon, when authenticating a peer during Phase 1, validates the X.509 certificate but doe

References

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