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CVE-2017-6542
The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an…
Critical9.8EPSS 21.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.
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)
- 21.8% · top 2.3% of all CVEs (4 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 (8)
- 97156 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 42137 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- GLSA-201703-03 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1038067 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2017:0741 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- GLSA-201706-09 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2017-6542)Record last updated .