TI-2019-12734 Aliases CVE-2019-17067 GHSA-rfxx-g57q-7c3j

PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which…

MEDIUM 45CWE-770Published 2019-10-01 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.

Summary

PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.

Why it matters now

EPSS 0.01634 76th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:putty:putty::::::::	before 0.73	Vulnerable	PuTTY
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:* Versions before 0.73 Vulnerable ·PuTTY
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-17067
2026-10-03 Alias added: GHSA-rfxx-g57q-7c3j

References

Advisory 1

https://lists.tartarus.org/pipermail/putty-announce/2019/000029.html

Other 1

https://security.netapp.com/advisory/ntap-20191127-0003/

TI-2002-01283 Multiple SSH2 servers and clients do not properly handle large packets or large fields… CVSS 2.0HIGH 10.0
TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
TI-2017-04321 The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have… CVSS 3.0CRITICAL 9.8
TI-2026-03565 PuTTY Ed25519 Signature ecc-ssh.c eddsa_verify signature verification CVSS 4.0MEDIUM 6.3
TI-2002-01281 Multiple SSH2 servers and clients do not properly handle packets or data elements with… CVSS 2.0HIGH 10.0
TI-2004-00914 Integer signedness error in the ssh2_rdpkt function in PuTTY before 0.56 allows remote… CVSS 2.0HIGH 10.0

See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences