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Idna CVE-2024-12224

MEDIUM
Improper Validation of Unsafe Equivalence in Input (CWE-1289)
2025-05-30 security@mozilla.org
Information Disclosure Red Hat Suse Idna Servo
5.1
CVSS 4.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-1289
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Hardware access control
Impact

CVSS score of 5.1 (MEDIUM). Attack characteristics: network attack vector, high complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.15%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

cargo idna fix: 1.0.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in cargo

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Technical ContextAI · show details

This vulnerability is classified under CWE-1289. Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname. Affected products include: Servo Idna.

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Severity by source

NVD PRIMARY 5.1 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N
SUSE 4.2 MEDIUM
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Red Hat 5.9 MEDIUM

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
High
Subsequent system: Integrity
Low
Subsequent system: Availability
None

Lifecycle Timeline

3
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
PoC Detected
Jun 25, 2025 - 15:33 vuln.today
Public exploit code
CVE Published
May 30, 2025 - 02:15 nvd
MEDIUM 5.1

DescriptionCVE.org

Improper Validation of Unsafe Equivalence in punycode by the idna crate from Servo rust-url allows an attacker to create a punycode hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname.

Executive ViewAI

Why It Matters

CVE-2024-12224 presents moderate security risk rated CVSS 5.1. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.2%
Top 64% exploitable
Exploit
POC
Public exploit code exists

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Low

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:servo:idna:*:*:*:*:*:rust:*:*

Same weakness CWE-1289 – Improper Validation of Unsafe Equivalence in Input

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CVE-2025-68613 HIGH POC
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CVE-2015-1701 HIGH POC
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CVE-2017-0147 HIGH POC
7.5

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/manager/5.0/x86_64/server-attestation:5.0.5.1.6.30.2 Affected
Container suse/multi-linux-manager/5.1/x86_64/server-attestation:5.1.2.8.15.2 Image server-attestation-image Affected
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.70 Affected
Container suse/sl-micro/6.0/base-os-container:latest Image SL-Micro Affected
Container suse/sl-micro/6.0/kvm-os-container:latest Container suse/sl-micro/6.0/rt-os-container:latest Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.2 Container suse/sl-micro/6.1/kvm-os-container:2.2.1-5.80 Container suse/sl-micro/6.1/rt-os-container:2.2.1-5.71 Affected

References

Advisories & patches
ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02586/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02587/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02768/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02809/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02810/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:02811/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03298/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03306/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03307/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:03445/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20491/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20716/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20783/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:20858/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:3783/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:3784/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:3785/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:3786/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2025:4411/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:0243/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:0620/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:20096/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:20755/ ADVISORY https://www.suse.com/support/update/SUSE-SU-2026:20910/ REF https://rustsec.org/advisories/RUSTSEC-2024-0421.html

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