CVE-2021-35041

Name: CVE-2021-35041
Creator: NVD / NIST
Published: 2021-06-24T00:15:08.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2021-35041 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted packet and lead to a crash. A malicious node can send a packet continuously. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted packet and lead to a crash. A malicious node can send a packet continuously. The packet is in an incorrect format and cannot be decoded by the node correctly. As a result, the node may consume the memory sustainably and crash. More details are shown at: https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.25%

65.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Fisco-Bcos	Fisco-Bcos	2.7.2

References

https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951Exploit, Patch, Third Party Advisory
https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951Exploit, Patch, Third Party Advisory

Timeline

Published: Jun 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-35041?

How severe is CVE-2021-35041?

CVE-2021-35041 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-35041?

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.

Are you affected by CVE-2021-35041?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST