How severe is CVE-2022-26534?

CVE-2022-26534 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-26534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26534?

CVE-2022-26534 affects Fisco-bcos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-26534?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-26534 published?

CVE-2022-26534 was published on 2022-03-17 and last updated on 2026-06-17.

CVE-2022-26534

CVE-2022-26534 is a high-severity vulnerability in Fisco-bcos with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Fisco-bcos
Published: 2022-03-17
Last modified: 2026-06-17

Description

FISCO-BCOS release-3.0.0-rc2 was discovered to contain an issue where a malicious node, via a malicious viewchange packet, will cause normal nodes to change view excessively and stop generating blocks.

Frequently asked questions

What is CVE-2022-26534?: FISCO-BCOS release-3.0.0-rc2 was discovered to contain an issue where a malicious node, via a malicious viewchange packet, will cause normal nodes to change view excessively and stop generating blocks.
How severe is CVE-2022-26534?: CVE-2022-26534 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-26534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26534?: CVE-2022-26534 affects Fisco-bcos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-26534?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-26534 published?: CVE-2022-26534 was published on 2022-03-17 and last updated on 2026-06-17.

References

https://github.com/FISCO-BCOS/FISCO-BCOS/issues/2211

Affected products (1)

cpe:2.3:a:fisco-bcos:fisco-bcos:3.0.0:rc2:*:*:*:*:*:*

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