Critical [CVE-2026-49980] Remote Code Execution via unauthenticated requests when `rcd --rc-serve` is enabled
This critical-severity Red Hat Linux advisory covers CVE-2026-49980.
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Summary
Remote Code Execution via unauthenticated requests when `rcd --rc-serve` is enabled. Red Hat rates this important (CVSS 9.8).
Weakness: CWE-78.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Until upgraded: 1. Stop using --rc-serve 2. Add RC auth (--rc-user + --rc-pass or --rc-htpasswd), and 3. Keep RC on localhost only (do not bind 0.0.0.0 without auth)
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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