Multiple integer overflows in the (1) sftp_pkt_getstring and (2) fxp_readdir_recv functions in the PSFTP and PSCP clients for PuTTY 0.56, and possibly earlier versions, allow remote malicious web sites to execute arbitrary code via SFTP responses that corrupt the heap after insufficient memory has been allocated
Published Feb 21, 2005
7.5
HIGHCVSS 2.0
EPSS 3.76%
Description
Multiple integer overflows in the (1) sftp_pkt_getstring and (2) fxp_readdir_recv functions in the PSFTP and PSCP clients for PuTTY 0.56, and possibly earlier versions, allow remote malicious web sites to execute arbitrary code via SFTP responses that corrupt the heap after insufficient memory has been allocated.
Affected products
Remediation
No remediation recorded yet.
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:P/I:P/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 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.76% (0.03760) | 89.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.04% (0.04041) | 89.26th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.96% (0.01961) | 81.87th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.09% (0.03091) | 77.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.96% (0.01961) | 82.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.35% (0.01348) | 86.72th | v3 (v2023.03.01) |
| Jan 29, 2024 | 1.35% (0.01348) | 84.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.50% (0.01503) | 84.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.42% (0.04421) | 88.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.42% (0.04421) | 87.03th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.42% (0.04421) | 70.83th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://secunia.com/advisories/14333 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/17214 third-party-advisoryx_refsource_SECUNIA
- http://www-1.ibm.com/support/docview.wss?uid=ssg1S1002414 x_refsource_CONFIRM
- http://www-1.ibm.com/support/docview.wss?uid=ssg1S1002416 x_refsource_CONFIRM
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-readdir.html x_refsource_CONFIRMVendor Advisory
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-string.html x_refsource_CONFIRMVendor Advisory
- http://www.gentoo.org/security/en/glsa/glsa-200502-28.xml vendor-advisoryx_refsource_GENTOOPatchVendor Advisory
- http://www.idefense.com/application/poi/display?id=201&type=vulnerabilities third-party-advisoryx_refsource_IDEFENSEPatchVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/19403 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/14333 | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://secunia.com/advisories/17214 | third-party-advisoryx_refsource_SECUNIA | |
| http://www-1.ibm.com/support/docview.wss?uid=ssg1S1002414 | x_refsource_CONFIRM | |
| http://www-1.ibm.com/support/docview.wss?uid=ssg1S1002416 | x_refsource_CONFIRM | |
| http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-readdir.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-string.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.gentoo.org/security/en/glsa/glsa-200502-28.xml | vendor-advisoryx_refsource_GENTOOPatchVendor Advisory | |
| http://www.idefense.com/application/poi/display?id=201&type=vulnerabilities | third-party-advisoryx_refsource_IDEFENSEPatchVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/19403 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.