CVE-2025-61731

CVE-2025-61731 is a high-severity vulnerability in Golang Go with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.

Key facts

Description

Building a malicious file with cmd/go can cause can cause a write to an attacker-controlled file with partial control of the file content. The "#cgo pkg-config:" directive in a Go source file provides command-line arguments to provide to the Go pkg-config command. An attacker can provide a "--log-file" argument to this directive, causing pkg-config to write to an attacker-controlled location.

Frequently asked questions

What is CVE-2025-61731?
Building a malicious file with cmd/go can cause can cause a write to an attacker-controlled file with partial control of the file content. The "#cgo pkg-config:" directive in a Go source file provides command-line arguments to provide to the Go pkg-config command. An attacker can provide a "--log-file" argument to this directive, causing pkg-config to write to an attacker-controlled location.
How severe is CVE-2025-61731?
CVE-2025-61731 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-61731 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61731?
CVE-2025-61731 affects Golang Go. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-61731?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-61731 have an EU (EUVD) identifier?
Yes. CVE-2025-61731 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206447.
When was CVE-2025-61731 published?
CVE-2025-61731 was published on 2026-01-28 and last updated on 2026-07-08.

References

Affected products (1)

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