Answer in brief
CVE-2026-102720 records a Medium severity (CVSS 5.3) vulnerability in DHCP client option walk drifts one byte per skipped option, reading past the received message and past the saved options buffer. The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/eclipse-threadx/netxduo (generic), Eclipse Foundation/Eclipse ThreadX NetX Duo (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 5.3. 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 Eclipse Foundation/eclipse-threadx/netxduo (generic), Eclipse Foundation/Eclipse ThreadX NetX Duo (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Eclipse Foundation/eclipse-threadx/netxduogeneric | >=0 <=6.5.1 | Not reported |
| Eclipse Foundation/Eclipse ThreadX NetX Duogeneric | >=6.0 <=6.5.2.202603a | Not reported |
Published upstream
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 29, 2026
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the DHCP client's option walk advances its offset one byte less than its read pointer for every option it skips. A DHCP server, or any host on the link that answers first, can make the client read up to about a kilobyte past the received message, and the same walk copies out-of-bounds bytes into the application's buffer when it retrieves a user option.
Quoted source text, attributed separately from HOL analysis.