Is CVE-2011-0064 in the CISA KEV catalog?

No. CVE-2011-0064 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-0064?

CVE-2011-0064 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2011-0064?

CVE-2011-0064 has an EPSS score of 3.33% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-0064?

Upgrade pango1.0 on debian 11 to 1.28.3-2~sid1 or later.

CVE & CISA-KEV Catalog

CVE-2011-0064

MEDIUMEPSS 87th pctl

6.8

CVSS v2

NVD

Description

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.

How to fix

Remediation Available

pango1.0Debian

Fixed in:1.28.3-2~sid1CVE-2011-0064

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

3.33%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Embed a live status badge for CVE-2011-0064

Markdown

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HTML

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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.