How severe is CVE-2008-3529?

CVE-2008-3529 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-3529 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3529?

CVE-2008-3529 primarily affects Xmlsoft Libxml2. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-3529?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-3529 published?

CVE-2008-3529 was published on 2008-09-12 and last updated on 2026-06-16.

CVE-2008-3529

CVE-2008-3529 is a critical-severity vulnerability in Xmlsoft Libxml2 with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 23% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 23% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Xmlsoft Libxml2
Published: 2008-09-12
Last modified: 2026-06-16

Description

Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a long XML entity name.

Frequently asked questions

What is CVE-2008-3529?: Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a long XML entity name.
How severe is CVE-2008-3529?: CVE-2008-3529 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-3529 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3529?: CVE-2008-3529 primarily affects Xmlsoft Libxml2. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-3529?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-3529 published?: CVE-2008-3529 was published on 2008-09-12 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.5.7:*:*:*:*:*:*:*

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