CVE-2011-4000

CVE-2011-4000 is a critical-severity vulnerability in Nara Institute Of Science And Technology Chasen with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Description

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

Frequently asked questions

What is CVE-2011-4000?
Buffer overflow in ChaSen 2.4.x allows remote attackers to execute arbitrary code via a crafted string.
How severe is CVE-2011-4000?
CVE-2011-4000 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-4000 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4000?
CVE-2011-4000 primarily affects Nara Institute Of Science And Technology Chasen. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4000?
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-2011-4000 published?
CVE-2011-4000 was published on 2011-11-08 and last updated on 2026-06-16.

References

Affected products (5)

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

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