Is CVE-2010-0421 in the CISA KEV catalog?

No. CVE-2010-0421 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-0421?

CVE-2010-0421 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2010-0421?

CVE-2010-0421 has an EPSS score of 2.47% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2010-0421?

Upgrade pango1.0 on debian 11 to 1.26.2-1 or later.

CVE & CISA-KEV Catalog

CVE-2010-0421

MEDIUMEPSS 83th pctl

4.3

CVSS v2

NVD

Description

Array index error in the hb_ot_layout_build_glyph_classes function in pango/opentype/hb-ot-layout.cc in Pango before 1.27.1 allows context-dependent attackers to cause a denial of service (application crash) via a crafted font file, related to building a synthetic Glyph Definition (aka GDEF) table by using this font's charmap and the Unicode property database.

CWE-119Buffer Overflow

How to fix

Remediation Available

pango1.0Debian

Fixed in:1.26.2-1CVE-2010-0421

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

2.47%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

ftp.gnome.org

Other references14

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2026-04-29.