Answer in brief
CVE-2025-7403 records a High severity (CVSS 7.6) vulnerability in Bluetooth: bt_conn_tx_processor unsafe handling. The current sources do not mark it as known exploited. The current feed maps zephyrproject-rtos/Zephyr (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 7.6. 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 zephyrproject-rtos/Zephyr (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| zephyrproject-rtos/Zephyrgeneric | >=* <4.2.0 | 4.2.0 |
Published upstream
Sep 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 13, 2026
Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.
Quoted source text, attributed separately from HOL analysis.