Is CVE-2021-27219 in the CISA KEV catalog?

No. CVE-2021-27219 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27219?

CVE-2021-27219 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-27219?

CVE-2021-27219 has an EPSS score of 2.99% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27219?

Upgrade glib2.0 on debian 11 to 2.66.6-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27219

HIGHEPSS 86th pctl

7.5

CVSS v3

NVD

Description

An issue was discovered in GNOME GLib before 2.66.6 and 2.67.x before 2.67.3. The function g_bytes_new has an integer overflow on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. The overflow could potentially lead to memory corruption.

CWE-681

How to fix

Remediation Available

glib2.0Debian

Fixed in:2.66.6-1CVE-2021-27219

glib2.0Ubuntu

Fixed in:2.48.2-0ubuntu4.7USN-4759-1

Fixed in:2.56.4-0ubuntu0.18.04.7USN-4759-1

Fixed in:2.64.6-1~ubuntu20.04.2USN-4759-1

libglib2.0-0Ubuntu

Fixed in:2.48.2-0ubuntu4.7USN-4759-1

Fixed in:2.56.4-0ubuntu0.18.04.7USN-4759-1

Fixed in:2.64.6-1~ubuntu20.04.2USN-4759-1

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.99%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Exploit1

gitlab.gnome.org

Third-Party Advisory3

Other references3

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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 2024-11-21.