CVE-2004-2678: Unspecified vulnerability in HP Tru64 UNIX 5.1B PK2(BL22) and PK3(BL24), and 5.1A PK6(BL24), when using IPsec/

Routine

MEDIUM 5.1MITIGATE

CVE-2004-2678 is a medium-severity flaw (CVSS 5.1) affecting tru64. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in HP Tru64 UNIX 5.1B PK2(BL22) and PK3(BL24), and 5.1A PK6(BL24), when using IPsec/IKE (Internet Key Exchange) with Certificates, allows remote attackers to gain privileges via unknown attack vectors.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hp

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

hp tru64 MITIGATE

Affected: 5.1a pk6 · 5.1b_p3k_bl24 · 5.1b_pk2_bl22

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.1a

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2004-2678?

tru64: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-2678 being exploited?

CVE-2004-2678 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-2004-2678 affect?

CVE-2004-2678 affects tru64. Severity is medium (CVSS 5.1). Unspecified vulnerability in HP Tru64 UNIX 5.1B PK2(BL22) and PK3(BL24), and 5.1A PK6(BL24), when using IPsec/IKE (Internet Key Exchange) with Certificates, allows remote attackers to gain privileges via unknown attack vectors.

How urgent is CVE-2004-2678?

Priority 35/100. No elevated risk signals yet.

Related CVEs

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CVE-2007-2791 HIGH 10.0 MITIGATE Unspecified vulnerability in the Secure Shell (SSH) in HP Tru64 UNIX 5.1B-4 and 5.1B-3 allows remote attackers
CVE-2007-2553 HIGH 7.2 MITIGATE Unspecified vulnerability in dop in HP Tru64 UNIX 5.1B-4, 5.1B-3, and 5.1A PK6 allows local users to gain priv
CVE-2007-0805 LOW 2.1 MITIGATE The ps (/usr/ucb/ps) command on HP Tru64 UNIX 5.1 1885 allows local users to obtain sensitive information, inc

References

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