CVE-2008-5369: noip2 in noip2 2.1.7 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/noip2 te

Routine

MEDIUM 6.9DOWNGRADE

CVE-2008-5369 is a medium-severity flaw (CVSS 6.9) affecting no-ip2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

noip2 in noip2 2.1.7 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/noip2 temporary file.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.9 (Medium)
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-59
Published	2008-12-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: no-ip

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

Am I affected?

Timeline

2008-12-08 23:30 UTCPublished CVE record published
2026-06-16 22:59 UTCUpdated Record last modified

no-ip no-ip2 DOWNGRADE

Affected: 2.1.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.7

1. Check installed version

apt-cache policy no-ip2 || rpm -q no-ip2 || no-ip2 --version

2. No fixed release: DOWNGRADE to a release before 2.1.7 (Debian / Ubuntu)

apt-cache madison no-ip2 sudo apt install no-ip2=<VERSION_BEFORE_2.1.7> sudo apt-mark hold no-ip2

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list no-ip2 sudo dnf downgrade no-ip2-<VERSION_BEFORE_2.1.7> sudo dnf versionlock add no-ip2

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2008-5369?

no-ip2: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2008-5369 being exploited?

CVE-2008-5369 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-2008-5369 affect?

CVE-2008-5369 affects no-ip2. Severity is medium (CVSS 6.9). noip2 in noip2 2.1.7 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/noip2 temporary file.

How urgent is CVE-2008-5369?

Priority 31/100. No elevated risk signals yet.

References

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