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CVE-2016-2563
Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to…
Critical9.8EPSS 32.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute arbitrary code via a crafted SCP-SINK file-size response to an SCP download request.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 32.8% · top 1.6% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (7)
- openSUSE-SU-2016:1453 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1035257 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- GLSA-201606-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 84296 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563 (opens in a new tab)x_refsource_MISCx_transferred
- 20160309 CVE-2016-2563 - PuTTY/PSCP <=0.66 buffer overflow - vuln-pscp-sink-sscanf (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .