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HIGH

CVE-2026-27140

CVE-2026-27140 — Code execution vulnerability in SWIG code generation in cmd/go

SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time due to trust layer bypass.

Published Updated Sources: cvelistV5, Go

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Unreported

no source claims exploitation

EPSS

1%

chance of exploitation in 30 days

Affects

go toolchain

26 products listed

CVSS base

8.8

HIGH

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

None

none · proof-of-concept · active

Automatable

No

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Affected scope

The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.

Products (26)

cmd gored hat enterprise linux 10red hat enterprise linux 10 0 extended update supportred hat enterprise linux 8red hat enterprise linux 8 4 advanced mission critical update supportred hat enterprise linux 8 4 extended update support long life add onred hat enterprise linux 8 6 advanced mission critical update supportred hat enterprise linux 8 6 telecommunications update servicered hat enterprise linux 8 6 update services for sap solutionsred hat enterprise linux 8 8 telecommunications update servicered hat enterprise linux 8 8 update services for sap solutionsred hat enterprise linux 9red hat enterprise linux 9 0 update services for sap solutionsred hat enterprise linux 9 2 update services for sap solutionsred hat enterprise linux 9 4 extended update supportred hat enterprise linux 9 6 extended update supportred hat openshift container platform 4 16red hat openshift container platform 4 17red hat openshift container platform 4 18red hat openshift container platform 4 19red hat openshift container platform 4 20openshift service mesh 2openshift service mesh 3red hat hardened imagesred hat openshift container platform 4red hat openshift virtualization 4

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactSource
8.8CVSS 3.1HIGH——cvelistV5

Weakness & attack patterns

  • CWE-641

References

24 on the record

Elsewhere on this site

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.