How severe is CVE-1999-0727?

CVE-1999-0727 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0727?

CVE-1999-0727 affects Openbsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0727?

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

When was CVE-1999-0727 published?

CVE-1999-0727 was published on 1999-08-06 and last updated on 2026-06-16.

CVE-1999-0727

CVE-1999-0727 is a medium-severity vulnerability in Openbsd with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openbsd
Published: 1999-08-06
Last modified: 2026-06-16

Description

A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted.

Frequently asked questions

What is CVE-1999-0727?: A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted.
How severe is CVE-1999-0727?: CVE-1999-0727 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0727?: CVE-1999-0727 affects Openbsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0727 published?: CVE-1999-0727 was published on 1999-08-06 and last updated on 2026-06-16.

References

http://www.osvdb.org/6127

Affected products (1)

cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:*

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