Is CVE-2014-8121 in the CISA KEV catalog?

No. CVE-2014-8121 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-8121?

CVE-2014-8121 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2014-8121?

CVE-2014-8121 has an EPSS score of 5.61% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-8121?

Upgrade glibc on debian 11 to 2.21-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2014-8121

MEDIUMEPSS 92th pctl

5.0

CVSS v2

NVD

Description

DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up on a database while iterating over it, which triggers the file pointer to be reset.

CWE-17

How to fix

Remediation Available

glibcDebian

Fixed in:2.21-1CVE-2014-8121

eglibcUbuntu

Fixed in:2.19-0ubuntu6.8USN-2985-1

libc6Ubuntu

Fixed in:2.19-0ubuntu6.8USN-2985-1

libc6-devUbuntu

Fixed in:2.19-0ubuntu6.8USN-2985-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

5.61%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Exploit2

Third-Party Advisory6

Mailing List2

Related Vulnerabilities

Other CWE-17 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-0240	High	10.0	88%	-	Fix
CVE-2015-3183	Medium	5.0	73%	-	Fix
CVE-2014-9222	High	10.0	64%	-	-
CVE-2015-4620	High	7.8	38%	-	Fix
CVE-2014-9707	High	7.5	28%	-	-
CVE-2015-2526	Medium	5.0	24%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.