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CVE-2023-28126

56
FAUCET Score

CVE-2023-28126 is an authentication bypass vulnerability affecting Ivanti Avalanche versions 6.3.x and below, allowing attackers to gain unauthorized access through exploiting the SetUser method or a race condition in the authentication process. Rated Medium severity (CVSS 5.9), this vulnerability can be exploited remotely with high attack complexity, potentially leading to high confidentiality impact without affecting integrity or availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.3.4.153CPE matchmatch criteria
cpe:2.3:a:ivanti:avalanche:*:*:*:*:premise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
66.66%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.6666 is in the 100th percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ivantivendor investigatingvia nvd_reference
View patch

References

forums.ivanti.com / s/article/ZDI-CAN-17750-Ivanti-Avalanche-EnterpriseServer-GetSettings-Exposed-Dangerous-Method-Authentication-Bypass-Vulnerability
Vendor Advisory