CVE-2024-27099 | Azure IoT Platform Device SDK Double Free Vulnerability

The uAMQP is a C library for AMQP 1.0 communication to Azure Cloud Services. When processing an incorrect `AMQP_VALUE` failed state, may cause a double free problem. This may cause a RCE. Update submodule with commit 2ca42b6e4e098af2d17e487814a91d05f6ae4987.

Published: 2024-02-27 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-27099 is rated Moderate Risk (63.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.43%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-27099

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.50% 1.43% -0.07%
2 2025-11-21 11.67% 1.50% -10.17%
3 2025-11-18 — 11.67% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-27099

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2024-27099

OS Trackers for CVE-2024-27099

vendor priority summary link
debian not yet assigned CVE-2024-27099 not yet assigned priority: Debian including 1 source packages (azure-uamqp-python), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2024-27099
redhat medium — https://access.redhat.com/security/cve/CVE-2024-27099
suse high — https://www.suse.com/security/cve/CVE-2024-27099/
ubuntu medium CVE-2024-27099 medium priority: Ubuntu including 1 source packages (azure-uamqp-python), 11 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 5, DNE 3, ignored 3. https://ubuntu.com/security/CVE-2024-27099

Affected software / configurations for CVE-2024-27099

Vendor Product Version Raw CPE
microsoft azure_uamqp < 2023-2-08 cpe:2.3:a:microsoft:azure_uamqp:*:*:*:*:*:*:*:*

References for CVE-2024-27099

cvelogic Threat Intelligence