CVE-2025-61724

Excessive CPU consumption in Reader.ReadResponse in net/textproto

CVSS 5.3 MEDIUMEPSS 0.5%

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

The Reader.ReadResponse function constructs a response string through repeated string concatenation of lines. When the number of lines in a response is large, this can cause excessive CPU consumption.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Go standard library · net/textproto

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References

https://go.dev/cl/709859 https://go.dev/issue/75716 https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI https://pkg.go.dev/vuln/GO-2025-4015 http://www.openwall.com/lists/oss-security/2025/10/08/1