How severe is CVE-1999-1301?

CVE-1999-1301 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-1301 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1301?

CVE-1999-1301 affects Freebsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1301?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-1301 published?

CVE-1999-1301 was published on 1996-07-16 and last updated on 2026-06-16.

CVE-1999-1301

CVE-1999-1301 is a high-severity vulnerability in Freebsd with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd
Published: 1996-07-16
Last modified: 2026-06-16

Description

A design flaw in the Z-Modem protocol allows the remote sender of a file to execute arbitrary programs on the client, as implemented in rz in the rzsz module of FreeBSD before 2.1.5, and possibly other programs.

Frequently asked questions

What is CVE-1999-1301?: A design flaw in the Z-Modem protocol allows the remote sender of a file to execute arbitrary programs on the client, as implemented in rz in the rzsz module of FreeBSD before 2.1.5, and possibly other programs.
How severe is CVE-1999-1301?: CVE-1999-1301 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1301 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1301?: CVE-1999-1301 affects Freebsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1301?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-1301 published?: CVE-1999-1301 was published on 1996-07-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

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