Is CVE-2024-34459 in the CISA KEV catalog?

No. CVE-2024-34459 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-34459?

CVE-2024-34459 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2024-34459?

CVE-2024-34459 has an EPSS score of 2.30% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-34459?

Upgrade libxml2 on debian 11 to 2.9.10+dfsg-6.7+deb11u8 or later. Fixes are available for 20 affected products.

CVE & CISA-KEV Catalog

CVE-2024-34459

HIGHEPSS 81th pctl

7.5

CVSS v3

NVD

Description

An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.10+dfsg-6.7+deb11u8CVE-2024-34459

Fixed in:2.9.14+dfsg-1.3~deb12u2CVE-2024-34459

Fixed in:2.12.7+dfsg+really2.9.14-0.4CVE-2024-34459

libxml2Red Hat / RHEL

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

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Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

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Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

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Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

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Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

libxml2Rocky

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

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Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

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Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

libxml2-debuginfoRocky

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

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Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

libxml2-debuginfoRed Hat / RHEL

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

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libxml2-debugsourceRed Hat / RHEL

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

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libxml2-debugsourceRocky

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

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libxml2-develRed Hat / RHEL

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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libxml2-develRocky

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libxml2-staticRed Hat / RHEL

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

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libxml2-staticRocky

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python3-libxml2Rocky

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Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

python3-libxml2Red Hat / RHEL

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.9.7-16.el8_8.14RHSA-2026:27739

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.7-16.el8_8.14RHSA-2026:27739

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

python3-libxml2-debuginfoRocky

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.7-16.el8_8.14RHSA-2026:27739

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

python3-libxml2-debuginfoRed Hat / RHEL

Fixed in:0:2.12.5-9.el10_0.1RHSA-2026:33635

Fixed in:0:2.12.5-10.el10_2.1RHSA-2026:28234

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.7-16.el8_8.14RHSA-2026:27739

Fixed in:0:2.9.7-13.el8_6.14RHSA-2026:27737

Fixed in:0:2.9.7-9.el8_4.10RHSA-2026:27736

Fixed in:0:2.9.7-21.el8_10.5RHSA-2026:26354

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-12.el9_6.2RHSA-2026:33634

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-13.el9_4.1RHSA-2026:33632

Fixed in:0:2.9.13-14.el9_8.1RHSA-2026:28254

Fixed in:0:2.9.13-3.el9_2.11RHSA-2026:33633

registry.redhat.io/discovery/discoveryRocky

Fixed in:server-rhel9@sha256:6c26d60b5d8eb5a823be4d6e83f2ebb32f5d15216338b85eb4b08aca4dc9316d_arm64RHSA-2026:33313

Fixed in:ui-rhel9@sha256:e9614239f2c391d00779cf6c7b998400de90bafbda14aa034e09020723c25a70_amd64RHSA-2026:33313

Fixed in:server-rhel9@sha256:7f4f6ce62705fe518e3513957b4205f106992cd42d1b07975d11aff2dc6ced66_amd64RHSA-2026:33313

Fixed in:ui-rhel9@sha256:3152cbb7f8ab85315ebb95b9f5cd5793c40859ee4487587f16a525ac5d408a44_arm64RHSA-2026:33313

registry.redhat.io/discovery/discoveryRed Hat / RHEL

Fixed in:ui-rhel9@sha256:e9614239f2c391d00779cf6c7b998400de90bafbda14aa034e09020723c25a70_amd64RHSA-2026:33313

Fixed in:server-rhel9@sha256:6c26d60b5d8eb5a823be4d6e83f2ebb32f5d15216338b85eb4b08aca4dc9316d_arm64RHSA-2026:33313

Fixed in:ui-rhel9@sha256:3152cbb7f8ab85315ebb95b9f5cd5793c40859ee4487587f16a525ac5d408a44_arm64RHSA-2026:33313

Fixed in:server-rhel9@sha256:7f4f6ce62705fe518e3513957b4205f106992cd42d1b07975d11aff2dc6ced66_amd64RHSA-2026:33313

registry.redhat.io/insights-proxy/insights-proxyRocky

Fixed in:container-rhel9@sha256:d819e02ffed786e8544254bd3780dcd8a336ac8640bcfe46bdafaaa5f59e192c_arm64RHSA-2026:34102

Fixed in:container-rhel9@sha256:ab22b39e57764b0b91cf5576c7a59ce8b0eb9174d957b54fe95daf16580f0720_amd64RHSA-2026:34102

registry.redhat.io/insights-proxy/insights-proxyRed Hat / RHEL

Fixed in:container-rhel9@sha256:ab22b39e57764b0b91cf5576c7a59ce8b0eb9174d957b54fe95daf16580f0720_amd64RHSA-2026:34102

Fixed in:container-rhel9@sha256:d819e02ffed786e8544254bd3780dcd8a336ac8640bcfe46bdafaaa5f59e192c_arm64RHSA-2026:34102

libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13+esm7USN-7302-1

Fixed in:2.9.3+dfsg1-1ubuntu0.7+esm7USN-7302-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.9+esm2USN-7302-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.9USN-7302-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.8USN-7240-1

Fixed in:2.9.13+dfsg-1ubuntu0.5USN-7240-1

Fixed in:2.9.13+dfsg-1ubuntu0.6USN-7302-1

Fixed in:2.9.14+dfsg-1.3ubuntu3.1USN-7240-1

Fixed in:2.9.14+dfsg-1.3ubuntu3.2USN-7302-1

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

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.30%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Exploit1

gitlab.gnome.org

Third-Party Advisory3

Release Notes2

Other references4

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	86%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	Fix

Embed a live status badge for CVE-2024-34459

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 2025-11-04.