CVE-2024-34459

Xmlsoft Libxml2 buffer overflow

7.5 HIGHPublic exploitEPSS 1.80%

Published14 May 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Affected products

Xmlsoft Libxml2≥ 2.12.0 < 2.12.7 · < 2.11.8

Remediation

Fixed in

Xmlsoft Libxml2≥ 2.12.7

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2024-34459 being actively exploited?

CVE-2024-34459 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.80%.

How severe is CVE-2024-34459?

CVE-2024-34459 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.80% probability of exploitation.

Which products are affected by CVE-2024-34459?

Affected products include Xmlsoft Libxml2.

How do I fix CVE-2024-34459?

Upgrade affected software to a fixed version, for example Xmlsoft Libxml2 2.12.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-34459 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation works Book a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.