How severe is CVE-2005-2659?

CVE-2005-2659 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2005-2659 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-2659?

CVE-2005-2659 affects Jed Wing Chm Lib. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-2659?

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-2005-2659 published?

CVE-2005-2659 was published on 2005-11-16 and last updated on 2026-06-16.

CVE-2005-2659

CVE-2005-2659 is a critical-severity vulnerability in Jed Wing Chm Lib with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jed Wing Chm Lib
Published: 2005-11-16
Last modified: 2026-06-16

Description

Buffer overflow in the LZX decompression in CHM Lib (chmlib) 0.35, as used in products such as KchmViewer, has unknown impact and attack vectors.

Frequently asked questions

What is CVE-2005-2659?: Buffer overflow in the LZX decompression in CHM Lib (chmlib) 0.35, as used in products such as KchmViewer, has unknown impact and attack vectors.
How severe is CVE-2005-2659?: CVE-2005-2659 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2005-2659 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-2659?: CVE-2005-2659 affects Jed Wing Chm Lib. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-2659?: 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-2005-2659 published?: CVE-2005-2659 was published on 2005-11-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:jed_wing:chm_lib:0.35:*:*:*:*:*:*:*

More vulnerabilities in Jed Wing Chm Lib

CVE-2005-2930 — Medium (CVSS 5.1): Stack-based buffer overflow in the _chm_find_in_PMGL function in chm_lib.c for chmlib before 0.36, as used in products…
CVE-2005-3318 — Medium (CVSS 5.1): Buffer overflow in the _chm_decompress_block function in CHM lib (chmlib) before 0.37, as used in products such as…
CVE-2006-3178 — Medium (CVSS 5.0): Directory traversal vulnerability in extract_chmLib example program in CHM Lib (chmlib) before 0.38 allows remote…

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