How severe is CVE-1999-0889?

CVE-1999-0889 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0889 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0889?

CVE-1999-0889 affects Cisco 675 Router. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0889?

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-1999-0889 published?

CVE-1999-0889 was published on 1999-07-01 and last updated on 2026-06-16.

CVE-1999-0889

CVE-1999-0889 is a high-severity vulnerability in Cisco 675 Router 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% (69th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco 675 Router
Published: 1999-07-01
Last modified: 2026-06-16

Description

Cisco 675 routers running CBOS allow remote attackers to establish telnet sessions if an exec or superuser password has not been set.

Frequently asked questions

What is CVE-1999-0889?: Cisco 675 routers running CBOS allow remote attackers to establish telnet sessions if an exec or superuser password has not been set.
How severe is CVE-1999-0889?: CVE-1999-0889 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0889 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0889?: CVE-1999-0889 affects Cisco 675 Router. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0889?: 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-1999-0889 published?: CVE-1999-0889 was published on 1999-07-01 and last updated on 2026-06-16.

References

http://www.osvdb.org/39

Affected products (1)

cpe:2.3:h:cisco:675_router:*:*:*:*:*:*:*:*