Answer in brief
CVE-2026-109445 records a Critical severity (CVSS 9.3) vulnerability in PLANET GS-5220-8P2T2S Stack Buffer Overflow via webstax_auth Cookie. The current sources do not mark it as known exploited. The current feed maps PLANET Technology Corp./PLANET GS-5220-8P2T2S (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 9.3. 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 PLANET Technology Corp./PLANET GS-5220-8P2T2S (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| PLANET Technology Corp./PLANET GS-5220-8P2T2Sgeneric | >=0 <3.2412b261008 | 3.2412b261008 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
PLANET GS-5220-8P2T2S (hardware version 3.0) firmware versions before 3.2412b261008 contains a stack-based buffer overflow vulnerability that allows unauthenticated attackers to corrupt stack memory by submitting an oversized webstax_auth HTTP Cookie value that is copied into a fixed-size stack buffer without length validation. Attackers can send a crafted unauthenticated HTTP request with an oversized cookie to overwrite the saved return address and corrupt stack memory, leading to memory corruption and potential denial of service on the device.
Quoted source text, attributed separately from HOL analysis.