The wu_fnmatch function in wu_fnmatch.c in wu-ftpd 2.6.1 and 2.6.2 allows remote attackers to cause a denial of service (CPU exhaustion by recursion) via a glob pattern with a large number of * (wildcard) characters, as demonstrated using the dir command
Published Feb 25, 2005
5.0
MEDIUMCVSS 2.0
EPSS 5.21%
Description
The wu_fnmatch function in wu_fnmatch.c in wu-ftpd 2.6.1 and 2.6.2 allows remote attackers to cause a denial of service (CPU exhaustion by recursion) via a glob pattern with a large number of * (wildcard) characters, as demonstrated using the dir command.
Affected products
No data.
- 2.6.1
- 2.6.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. Red Hat Enterprise Linux 2.1 shipped with wu-ftpd, however we were unable to reproduce this issue. Additionally, a code analysis showed that attempts to exploit this issue would be caught in the versions we shipped. http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149720
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 5.21% (0.05208) | 92.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.21% (0.05208) | 91.39th | v5 (v2026.06.15) |
| Aug 5, 2025 | 26.55% (0.26554) | 96.12th | v4 (v2025.03.14) |
| Mar 30, 2025 | 24.37% (0.24365) | 95.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.35% (0.18346) | 92.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.38% (0.24375) | 95.64th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.65% (0.03650) | 91.59th | v3 (v2023.03.01) |
| Feb 2, 2024 | 7.18% (0.07182) | 93.40th | v3 (v2023.03.01) |
| Jun 17, 2023 | 6.00% (0.06004) | 92.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.52% (0.06524) | 92.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
References (18)
- ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.63/SCOSA-2005.63.txt vendor-advisoryx_refsource_SCO
- http://itrc.hp.com/service/cki/docDisplay.do?docId=c00637342 vendor-advisoryx_refsource_HP
- http://secunia.com/advisories/14411 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/18210 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/19561 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-101699-1 vendor-advisoryx_refsource_SUNALERT
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-57795-1 vendor-advisoryx_refsource_SUNALERT
- http://www.debian.org/security/2005/dsa-705 vendor-advisoryx_refsource_DEBIANPatchVendor Advisory
- http://www.idefense.com/application/poi/display?id=207&type=vulnerabilities third-party-advisoryx_refsource_IDEFENSEExploit
- http://www.osvdb.org/14203 vdb-entryx_refsource_OSVDB
- http://www.vupen.com/english/advisories/2005/0588 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2006/1271 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2005-0256 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2005-0256
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1265 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1333 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1762 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2005-0256
Change history (0)
No recorded changes yet.