7.8

CVE-2025-61731: Arbitrary file write using cgo pkg-config directive in cmd/go

Modified
AliasesUBUNTU-CVE-2025-61731DEBIAN-CVE-2025-61731CGA-232v-c26c-xrvc
Published 28-01-2026Last modified 10-09-2026

Vulnerability summary

CVE-2025-61731 is a high (CVSS 7.8) vulnerability in go toolchain cmd/go. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 49.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.61%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 34 · Related 34
MGASA-2026-0035OPENSUSE-SU-2026:10063-1OPENSUSE-SU-2026:10064-1OPENSUSE-SU-2026:20077-1OPENSUSE-SU-2026:20085-1OPENSUSE-SU-2026:20301-1

Timeline

  1. 28-01-2026
    PublishedVulnerability first disclosed.
  2. 10-09-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.61%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.62% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard198 products
  • aactl< 0.4.12-r40
  • actions-runner-controller< 0.13.1-r1 | < 0.13.1-r3
  • actions-runner-controller-fips< 0.13.1-r1 | < 0.13.1-r5
  • age< 1.3.1-r3 | < 1.3.1-r1
  • age-fips< 1.3.1-r3 | < 1.3.1-r1
Alpine2 products
  • etcd< 3.6.8-r0
  • go≥ 1.25.0, < 1.24.12-r0 | ≥ 1.25.0, < 1.25.6-r0

2 vendors · 200 products · Showing 200 of 1945

References

46 links
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