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CVE-2015-5309
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or…
Medium4.3EPSS 3.5%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 3.5% · top 11% 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: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
References (7)
- DSA-3409 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2015-3d17682c15 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2015-5ad4a1f151 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 1034308 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201606-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- openSUSE-SU-2015:2023 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_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)
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[](https://trackcve.app/cve/CVE-2015-5309)Record last updated .