An improper authentication vulnerability exists in Avalanche Premise versions 6.3.x and below that could allow an attacker to gain access t…

published 2023-05-09 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-31836

cvss: 5.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.3%; EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits: 0; none known

An improper authentication vulnerability exists in Avalanche Premise versions 6.3.x and below that could allow an attacker to gain access to the server by registering to receive messages from the server and perform an authentication bypass.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-29)

Exploit prediction

2.25% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

n/a Avalanche

Classification

Weakness

CWE-287 Improper Authentication
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

forums.ivanti.com /s/article/ZDI-CAN-17729-CVE-2023-28125-Bug-958437-ZDI-CAN-17729-Ivanti-Avalanche-InfoRail-Authentication-Bypa
vendor-advisory

Sources

CVE List CVE-2023-28125
NVD CVE-2023-28125

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Summary