The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted…
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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
Why it matters now
EPSS 0.0125 69th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fisco-bcos:fisco-bcos:2.7.2:*:*:*:*:*:*:* | 2.7.2 | Vulnerable | FISCO-BCOS |
- cpe:2.3:a:fisco-bcos:fisco-bcos:2.7.2:*:*:*:*:*:*:* Versions 2.7.2 Vulnerable ·FISCO-BCOS
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-35041
- 2026-10-03 Alias added: GHSA-5vvg-7wfp-qh9p
References
More Fisco-bcos vulnerabilities
- TI-2024-38339 FISCO BCOS 3.11.0 has an issue with synchronization of the transaction pool that can, for… CVSS 3.1MEDIUM 4.0
- TI-2022-11540 FISCO-BCOS release-3.0.0-rc2 was discovered to contain an issue where a malicious node… CVSS 3.1HIGH 7.5
- TI-2022-11539 FISCO-BCOS release-3.0.0-rc2 was discovered to contain an issue where a malicious node… CVSS 3.1HIGH 7.5
- TI-2022-09872 FISCO-BCOS release-3.0.0-rc2 was discovered to contain an issue where a malicious node… CVSS 3.1HIGH 7.5
- TI-2021-21190 FISCO-BCOS release-3.0.0-rc2 contains a denial of service vulnerability. CVSS 3.1HIGH 7.5
Sources
- CVE-2021-35041 · CVE Program
- CVE-2021-35041 · NVD
- FIRST EPSS
- GHSA-5vvg-7wfp-qh9p · GitHub Advisory Database · CC BY 4.0
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