Answer in brief
CVE-2026-127090 records a High severity (CVSS 8.7) vulnerability in Jadaptive Maverick Synergy Server before 3.0.33 and 3.1.x before 3.1.7, and Maverick Legacy Server before 1.8.1, SSH Public Key Cross-User Authentication Bypass. The current sources do not mark it as known exploited. The current feed maps Jadaptive/Maverick Legacy Server (generic), Jadaptive/Maverick Synergy Server (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 8.7. 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 Jadaptive/Maverick Legacy Server (generic), Jadaptive/Maverick Synergy Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Jadaptive/Maverick Legacy Servergeneric | >=0 <1.8.1 | 1.8.1 |
| Jadaptive/Maverick Synergy Servergeneric | >=0 <3.0.33 || >=3.1.0 <3.1.7 | 3.0.33, 3.1.7 |
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
Jadaptive Maverick Synergy Server before 3.0.33 and 3.1.x before 3.1.7, and Maverick Legacy Server before 1.8.1, contain an authentication bypass vulnerability in SSH public key authentication that reuses cached key authorization decisions across usernames. Attackers holding a key authorized for one account can authenticate it, then send a signed SSH_MSG_USERAUTH_REQUEST with a different username on the same connection to log in as that account.
Quoted source text, attributed separately from HOL analysis.