Code injection via copied declaration comments
Published Feb 5, 2026 · Updated Aug 26, 2026
Code injection in Go cmd/cgo before 1.24.13 and 1.25.0 through 1.25.6 allows attackers to smuggle C code into generated binaries. The saveExport function in src/cmd/cgo/ast.go copies user-provided declaration comments into generated cgo AST documentation, where Go and C/C++ parsing differences expose hidden C tokens. Exploitation requires an attacker-controlled cgo source file to be compiled, after which the concealed code executes with the resulting binary's privileges.
Summary
What happened
Code injection in Go cmd/cgo before 1.24.13 and 1.25.0 through 1.25.6 allows attackers to smuggle C code into generated binaries. The saveExport function in src/cmd/cgo/ast.go copies user-provided declaration comments into generated cgo AST documentation, where Go and C/C++ parsing differences expose hidden C tokens. Exploitation requires an attacker-controlled cgo source file to be compiled, after which the concealed code executes with the resulting binary's privileges.
The record
- CVE
- CVE-2025-61732
- Published
- Feb 5, 2026
- Updated
- Aug 26, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat OpenShift Service Mesh
- Classifications
- CWE-94, T1195.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 5, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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