How severe is CVE-2003-0099?

CVE-2003-0099 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2003-0099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0099?

CVE-2003-0099 affects Apc Apcupsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-0099?

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-2003-0099 published?

CVE-2003-0099 was published on 2003-03-03 and last updated on 2026-06-16.

CVE-2003-0099

CVE-2003-0099 is a high-severity vulnerability in Apc Apcupsd with a CVSS 2.0 base score of 7.2. 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 7.2)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apc Apcupsd
Published: 2003-03-03
Last modified: 2026-06-16

Description

Multiple buffer overflows in apcupsd before 3.8.6, and 3.10.x before 3.10.5, may allow attackers to cause a denial of service or execute arbitrary code, related to usage of the vsprintf function.

Frequently asked questions

What is CVE-2003-0099?: Multiple buffer overflows in apcupsd before 3.8.6, and 3.10.x before 3.10.5, may allow attackers to cause a denial of service or execute arbitrary code, related to usage of the vsprintf function.
How severe is CVE-2003-0099?: CVE-2003-0099 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2003-0099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0099?: CVE-2003-0099 affects Apc Apcupsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0099?: 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-2003-0099 published?: CVE-2003-0099 was published on 2003-03-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apc:apcupsd:3.8.5:*:*:*:*:*:*:*

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