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CVE-2024-21638

26
FAUCET Score

CVE-2024-21638 is a critical elevation of privilege vulnerability affecting Microsoft Azure IPAM (IP Address Management) versions prior to 3.0.0. The flaw stems from insufficient validation of authentication tokens, allowing an attacker to impersonate privileged users and gain unauthorized access to data within the IPAM instance and potentially the broader Azure environment. With a CVSS score of 9.8 (CRITICAL), this vulnerability is remotely exploitable with low attack complexity, leading to high impact on confidentiality, integrity, and availability. Currently, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.0CPE matchmatch criteria
cpe:2.3:a:microsoft:azure_ipam:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.66%
Probability of exploitation in next 30 days
EPSS Percentile
74.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0166 is in the 62nd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / Azure/ipam/commit/64ef2d07edf16ffa50f29c7e0e25d32d974b367f
Patch
github.com / Azure/ipam/pull/218
Patch
github.com / Azure/ipam/security/advisories/GHSA-m8mp-jq4c-g8j6
MitigationVendor Advisory