CVE-2021-3541
MEDIUMCVSS 6.5/10EPSS 1.86%
Last modified
CVE-2021-3541 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.. EPSS estimates a 1.86% chance of exploitation in the next 30 days.
Description
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xmlsoft | Libxml2 | < 2.9.11 |
| Redhat | Jboss Core Services | All versions |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Cloud Backup | All versions |
| Netapp | Clustered Data Ontap | All versions |
| Netapp | Clustered Data Ontap Antivirus Connector | All versions |
| Netapp | Manageability Software Development Kit | All versions |
| Netapp | Ontap Select Deploy Administration Utility | All versions |
| Netapp | Smi-S Provider | All versions |
| Netapp | Snapdrive | All versions |
| Netapp | H410c Firmware | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1950515Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0007/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1950515Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0007/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3541?
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
How severe is CVE-2021-3541?
CVE-2021-3541 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.86% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3541?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-3541?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST