Is CVE-2009-1633 in the CISA KEV catalog?

No. CVE-2009-1633 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-1633?

CVE-2009-1633 has a CVSS v2 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2009-1633?

CVE-2009-1633 has an EPSS score of 3.03% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-1633?

Upgrade linux kernel to 2.6.29.4 or later.

CVE & CISA-KEV Catalog

CVE-2009-1633

HIGHEPSS 86th pctl

7.1

CVSS v2

NVD

Description

Multiple buffer overflows in the cifs subsystem in the Linux kernel before 2.6.29.4 allow remote CIFS servers to cause a denial of service (memory corruption) and possibly have unspecified other impact via (1) a malformed Unicode string, related to Unicode string area alignment in fs/cifs/sess.c; or (2) long Unicode characters, related to fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c.

CWE-119Buffer Overflow

How to fix

Remediation Available

linux kernelNVD

Affected:< 2.6.29.4Fixed in:2.6.29.4CVE-2009-1633derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.03%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.