CVE-2019-17067

CRITICAL

9.8

CVSS Score

Published: October 1, 2019 at 04:55 PM UTC

Updated: June 17, 2026 at 02:23 AM UTC

1 product affected across 1 vendorPuTTY· also runs on 1 platform

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Severity

CRITICAL9.8

Exploit prediction

EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PuTTY · Putty

95%

v < 0.73

Affected range stops below 0.73, so it looks safe — our inference, not a vendor statement

microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Windows · Microsoft

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCMailing ListThird Party Advisory

Source: [email protected]

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

x_refsource_CONFIRM

Source: [email protected]

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

CVSS

9.8CRITICAL[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-770

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