How severe is CVE-2001-0040?

CVE-2001-0040 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2001-0040 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0040?

CVE-2001-0040 affects Apc Apcupsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0040?

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

When was CVE-2001-0040 published?

CVE-2001-0040 was published on 2001-02-16 and last updated on 2026-06-16.

CVE-2001-0040

CVE-2001-0040 is a low-severity vulnerability in Apc Apcupsd with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apc Apcupsd
Published: 2001-02-16
Last modified: 2026-06-16

Description

APC UPS daemon, apcupsd, saves its process ID in a world-writable file, which allows local users to kill an arbitrary process by specifying the target process ID in the apcupsd.pid file.

Frequently asked questions

What is CVE-2001-0040?: APC UPS daemon, apcupsd, saves its process ID in a world-writable file, which allows local users to kill an arbitrary process by specifying the target process ID in the apcupsd.pid file.
How severe is CVE-2001-0040?: CVE-2001-0040 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2001-0040 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0040?: CVE-2001-0040 affects Apc Apcupsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0040?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-0040 published?: CVE-2001-0040 was published on 2001-02-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apc:apcupsd:3.7.2:*:*:*:*:*:*:*

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