Format string vulnerability in wu-ftp 2.6.1 and earlier, when running with debug mode enabled, allows remote attackers to execute arbitrary commands via a malformed argument that is recorded in a PASV port assignment
Published May 7, 2001
10.0
HIGHCVSS 2.0
EPSS 5.67%
Description
Format string vulnerability in wu-ftp 2.6.1 and earlier, when running with debug mode enabled, allows remote attackers to execute arbitrary commands via a malformed argument that is recorded in a PASV port assignment.
Affected products
No data.
- 2.4.1
- 2.4.2_beta9
- 2.4.2_beta18
- 2.4.2_beta18_vr4
- 2.4.2_beta18_vr5
- 2.4.2_beta18_vr6
- 2.4.2_beta18_vr7
- 2.4.2_beta18_vr8
- 2.4.2_beta18_vr9
- 2.4.2_beta18_vr10
- 2.4.2_beta18_vr11
- 2.4.2_beta18_vr12
- 2.4.2_beta18_vr13
- 2.4.2_beta18_vr14
- 2.4.2_beta18_vr15
- 2.4.2_vr16
- 2.4.2_vr17
- 2.5
- 2.6
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Enterprise Linux 2.1 ships with wu-ftp version 2.6.2 which is not vulnerable to this issue.
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:C/I:C/A:C
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 1, 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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.67% (0.05669) | 92.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.67% (0.05669) | 91.96th | v5 (v2026.06.15) |
| Jun 20, 2025 | 8.09% (0.08089) | 91.70th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.83% (0.06833) | 90.44th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.68% (0.09678) | 88.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.70% (0.06702) | 90.55th | v4 (v2025.03.14) |
| Dec 17, 2024 | 11.83% (0.11835) | 95.30th | v3 (v2023.03.01) |
| Oct 12, 2023 | 3.48% (0.03477) | 90.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.10% (0.02099) | 87.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.48% (0.04482) | 88.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.48% (0.04482) | 87.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.48% (0.04482) | 71.45th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- ftp://ftp.wu-ftpd.org/pub/wu-ftpd/patches/apply_to_current/missing_format_strings.patch x_refsource_CONFIRM
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000443 vendor-advisoryx_refsource_CONECTIVA
- http://www.debian.org/security/2001/dsa-016 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/2296 vdb-entryx_refsource_BIDExploitPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2001-0187 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6020 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2001-0187
- https://www.cve.org/CVERecord?id=CVE-2001-0187
| Link | Providers | Tags |
|---|---|---|
| ftp://ftp.wu-ftpd.org/pub/wu-ftpd/patches/apply_to_current/missing_format_strings.patch | x_refsource_CONFIRM | |
| http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000443 | vendor-advisoryx_refsource_CONECTIVA | |
| http://www.debian.org/security/2001/dsa-016 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/2296 | vdb-entryx_refsource_BIDExploitPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2001-0187 | Vendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/6020 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2001-0187 | ||
| https://www.cve.org/CVERecord?id=CVE-2001-0187 |
Change history (0)
No recorded changes yet.