CVE-2021-35971
CRITICALCVSS 9.8/10EPSS 1.24%
Last modified
CVE-2021-35971 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.
Description
Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Veeam | Veeam Backup \& Replication | >= 10.0, < 10.0.1.4854 |
| Veeam | Veeam Backup \& Replication | >= 11.0, < 11.0.0.837 |
References
- https://www.veeam.com/kb4126Release Notes, Vendor Advisory
- https://www.veeam.com/kb4180Release Notes, Vendor Advisory
- https://www.veeam.com/kb4126Release Notes, Vendor Advisory
- https://www.veeam.com/kb4180Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-35971?
Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.
How severe is CVE-2021-35971?
CVE-2021-35971 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.
How do I fix CVE-2021-35971?
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.
Related CVEs from 2021
- CVE-2021-35966The specific function of the Orca HCM digital learning platf…6.1
- CVE-2021-35967The directory page parameter of the Orca HCM digital learnin…5.3
- CVE-2021-35968The directory list page parameter of the Orca HCM digital le…4.3
- CVE-2021-35969Pexip Infinity before 26 allows temporary remote Denial of S…7.5
- CVE-2021-3597A flaw was found in undertow. The HTTP2SourceChannel fails t…5.9
- CVE-2021-35970Talk 4 in Coral before 4.12.1 allows remote attackers to dis…7.5
- CVE-2021-35973NETGEAR WAC104 devices before 1.0.4.15 are affected by an au…9.8
- CVE-2021-35975Absolute path traversal vulnerability in the Systematica SMT…5.3
- CVE-2021-35976The feature to preview a website in Plesk Obsidian 18.0.0 th…6.1
- CVE-2021-35977An issue was discovered in Digi RealPort for Windows through…9.8
- CVE-2021-35978An issue was discovered in Digi TransPort DR64, SR44 VC74, a…9.8
- CVE-2021-35979An issue was discovered in Digi RealPort through 4.8.488.0. …8.1
Are you affected by CVE-2021-35971?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST