How severe is CVE-2018-14621?

CVE-2018-14621 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2018-14621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14621?

CVE-2018-14621 primarily affects Libtirpc Project Libtirpc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-14621?

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

When was CVE-2018-14621 published?

CVE-2018-14621 was published on 2018-08-30 and last updated on 2026-06-17.

CVE-2018-14621

CVE-2018-14621 is a medium-severity vulnerability in Libtirpc Project Libtirpc with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 7.8
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Libtirpc Project Libtirpc
Published: 2018-08-30
Last modified: 2026-06-17

Description

An infinite loop vulnerability was found in libtirpc before version 1.0.2-rc2. With the port to using poll rather than select, exhaustion of file descriptors would cause the server to enter an infinite loop, consuming a large amount of CPU time and denying service to other clients until restarted.

Frequently asked questions

What is CVE-2018-14621?: An infinite loop vulnerability was found in libtirpc before version 1.0.2-rc2. With the port to using poll rather than select, exhaustion of file descriptors would cause the server to enter an infinite loop, consuming a large amount of CPU time and denying service to other clients until restarted.
How severe is CVE-2018-14621?: CVE-2018-14621 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2018-14621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14621?: CVE-2018-14621 primarily affects Libtirpc Project Libtirpc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-14621?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-14621 published?: CVE-2018-14621 was published on 2018-08-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:libtirpc_project:libtirpc:*:*:*:*:*:*:*:*
cpe:2.3:a:libtirpc_project:libtirpc:1.0.2:rc1:*:*:*:*:*:*

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