How severe is CVE-1999-0523?

CVE-1999-0523 has a CVSS 2.0 base score of 0.0, rated none severity.

Is CVE-1999-0523 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.

How do I fix CVE-1999-0523?

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

When was CVE-1999-0523 published?

CVE-1999-0523 was published on 1999-01-01 and last updated on 2026-06-16.

CVE-1999-0523

CVE-1999-0523 is a none-severity vulnerability with a CVSS 2.0 base score of 0.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: None (CVSS 2.0 base score 0.0)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Published: 1999-01-01
Last modified: 2026-06-16

Description

ICMP echo (ping) is allowed from arbitrary hosts.

Frequently asked questions

What is CVE-1999-0523?: ICMP echo (ping) is allowed from arbitrary hosts.
How severe is CVE-1999-0523?: CVE-1999-0523 has a CVSS 2.0 base score of 0.0, rated none severity.
Is CVE-1999-0523 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.
How do I fix CVE-1999-0523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0523 published?: CVE-1999-0523 was published on 1999-01-01 and last updated on 2026-06-16.

References

https://www.cve.org/CVERecord?id=CVE-1999-0523