CVE-2023-28126
MediumAn authentication bypass vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to gain access by exploiting the SetUser method or can exploit the Race Condition in the authentication message.
Published May 9, 2023 · Updated Jan 29, 2025
Key Facts
Patch immediately- CVE-2023-28126 is a medium-severity vulnerability (CVSS 5.9 v3.1) affecting Avalanche (Ivanti).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 67% probability of exploitation in the next 30 days.
- Fixed versions are available, including Avalanche <=6.3.4.153, Avalanche 6.3.4.153.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
67%
Higher than 99.2% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2023-28126 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
An authentication bypass vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to gain access by exploiting the SetUser method or can exploit the Race Condition in the authentication message.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| AvalancheIvanti | >= Avalanche versions 6.3.x and below | 6.3.4.153 |
Patched Releases
Avalanche
<=6.3.4.153
Timeline
Publicly disclosed
May 9, 2023
Last updated
Jan 29, 2025
Weakness Type
- CWE-305 Authentication Bypass by Primary Weakness
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
References
FAQ
Common Questions.
An authentication bypass vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to gain access by exploiting the SetUser method or can exploit the Race Condition in the authentication message.
Affected: Avalanche (Ivanti) versions >= Avalanche versions 6.3.x and below. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Avalanche <=6.3.4.153, Avalanche 6.3.4.153.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
Is CVE-2023-28126 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo