CVE-2009-0537

mediumpriority · track · 31EPSS 0.036 · 89 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

3.59% (89th) EPSS

CVSS 4.9 · medium

Is it mine?

27 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

Integer overflow in the fts_build function in fts.c in libc in (1) OpenBSD 4.4 and earlier and (2) Microsoft Interix 6.0 build 10.0.6030.0 allows context-dependent attackers to cause a denial of service (application crash) via a deep directory tree, related to the fts_level structure member, as demonstrated by (a) du, (b) rm, (c) chmod, and (d) chgrp on OpenBSD; and (e) SearchIndexer.exe on Vista Enterprise.

cvss

Technical severity, 0–10. One row per scoring source.

4.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.9mediumAV:L/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 6.9

v2.04.4mediumAV:L/AC:L/Au:N/C:N/I:N/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-189USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-8163Libc - 'libc:fts_*()' Local Denial of Servicefunctional · exploit_db

affected products (27)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft interix= 6.0nvdUScpe:2.3:a:microsoft:interix:*:*:*:*:*:*:*:*
openbsd openbsd≤ 4.4nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.0nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.1nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.2nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.3nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.4nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.5nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.6nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.7nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.8nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 2.9nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.0nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.1nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.2nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.3nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.4nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.5nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*
openbsd openbsd= 3.6nvdUScpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

showing 20 of 27

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-03-09modified 2026-06-16

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+1337 more

references (14)

External citations — patches, advisories, analysis.

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