Answer in brief
CVE-2026-127029 records a High severity (CVSS 7.5) vulnerability in Freeradius: stack-based buffer overflow via unbounded eap-sim identity length. The current sources do not mark it as known exploited. The current feed maps Red Hat/freeradius (generic), Red Hat/freeradius:3.0/freeradius (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/freeradius (generic), Red Hat/freeradius:3.0/freeradius (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/freeradiusgeneric | * | Not reported |
| Red Hat/freeradius:3.0/freeradiusgeneric | * | Not reported |
Published upstream
Nov 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 12, 2026
A flaw was found in freeradius's Extensible Authentication Protocol Method for Subscriber Identity Module (EAP-SIM) module. When handling authentication requests, the server copies a client-supplied identity into an internal structure without properly checking its length against a fixed-size buffer. An unauthenticated remote attacker can exploit this issue by sending specially crafted EAP-SIM messages, triggering a stack buffer overflow that crashes the service and results in a Denial of Service (DoS).
Quoted source text, attributed separately from HOL analysis.