How severe is CVE-1999-1582?

CVE-1999-1582 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-1582 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-1582?

CVE-1999-1582 affects Cisco Pix Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-1582?

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-1999-1582 published?

CVE-1999-1582 was published on 1998-07-15 and last updated on 2026-06-16.

CVE-1999-1582

CVE-1999-1582 is a high-severity vulnerability in Cisco Pix Firewall 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: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Pix Firewall
Published: 1998-07-15
Last modified: 2026-06-16

Description

By design, the "established" command on the Cisco PIX firewall allows connections from one host to arbitrary ports of a target host if an alternative conduit has already been allowed, which can cause administrators to configure less restrictive access controls than intended if they do not understand this functionality.

Frequently asked questions

What is CVE-1999-1582?: By design, the "established" command on the Cisco PIX firewall allows connections from one host to arbitrary ports of a target host if an alternative conduit has already been allowed, which can cause administrators to configure less restrictive access controls than intended if they do not understand this functionality.
How severe is CVE-1999-1582?: CVE-1999-1582 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-1582 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-1582?: CVE-1999-1582 affects Cisco Pix Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-1582?: 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-1999-1582 published?: CVE-1999-1582 was published on 1998-07-15 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:cisco:pix_firewall:*:*:*:*:*:*:*:*

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