How severe is CVE-2008-4977?

CVE-2008-4977 has a CVSS 2.0 base score of 6.9, rated medium severity.

Is CVE-2008-4977 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4977?

CVE-2008-4977 affects Postfix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4977?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-4977 published?

CVE-2008-4977 was published on 2008-11-06 and last updated on 2026-06-16.

CVE-2008-4977

CVE-2008-4977 is a medium-severity vulnerability in Postfix with a CVSS 2.0 base score of 6.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: Medium (CVSS 2.0 base score 6.9)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Postfix
Published: 2008-11-06
Last modified: 2026-06-16

Description

postfix_groups.pl in Postfix 2.5.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/postfix_groups.stdout, (2) /tmp/postfix_groups.stderr, and (3) /tmp/postfix_groups.message temporary files. NOTE: the vendor disputes this vulnerability, stating "This is not a real issue ... users would have to edit a script under /usr/lib to enable it.

Frequently asked questions

What is CVE-2008-4977?: postfix_groups.pl in Postfix 2.5.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/postfix_groups.stdout, (2) /tmp/postfix_groups.stderr, and (3) /tmp/postfix_groups.message temporary files. NOTE: the vendor disputes this vulnerability, stating "This is not a real issue ... users would have to edit a script under /usr/lib to enable it.
How severe is CVE-2008-4977?: CVE-2008-4977 has a CVSS 2.0 base score of 6.9, rated medium severity.
Is CVE-2008-4977 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4977?: CVE-2008-4977 affects Postfix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4977?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4977 published?: CVE-2008-4977 was published on 2008-11-06 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:postfix:postfix:2.5.2:*:*:*:*:*:*:*

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