Dashboard / CVE-2026-127090

CVE-2026-127090

HIGH
MEDIUM Priority: 0.07 BB Relevance: 68/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

Description

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
Jadaptive Maverick Legacy Server 0 < 1.8.1
Jadaptive Maverick Legacy Server 0 < 1.8.1
Jadaptive Maverick Synergy Server 0 < 3.0.33
Jadaptive Maverick Synergy Server 3.1.0 < 3.1.7
Jadaptive Maverick Synergy Server 0 < 3.0.33
Jadaptive Maverick Synergy Server 3.1.0 < 3.1.7

References & Advisories (7)

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.76%
Raw Score 0.007610
Percentile 55.9%
Date 2026-11-13

Intelligence Sources

mitre ref →
nvd ref →

External Links