CVE-2011-4000

critical

Published 2011-11-08 · Modified 2026-04-29

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

9.3

Description

Buffer overflow in ChaSen 2.4.x allows remote attackers to execute arbitrary code via a crafted string.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.4.4-17`
sid	Fixed	`2.4.4-17`
forky	Fixed	`2.4.4-17`
bullseye	Fixed	`2.4.4-17`
bookworm	Fixed	`2.4.4-17`

Application impact

Vendor	Product	Versions	Fixed
nara_institute_of_science_and_technology	chasen	`2.4.0`
nara_institute_of_science_and_technology	chasen	`2.4.1`
nara_institute_of_science_and_technology	chasen	`2.4.2`
nara_institute_of_science_and_technology	chasen	`2.4.3`
nara_institute_of_science_and_technology	chasen	`2.4.4`

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.