How severe is CVE-2021-31294?

CVE-2021-31294 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-31294 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31294?

CVE-2021-31294 affects Redis. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31294?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-31294 published?

CVE-2021-31294 was published on 2023-07-15 and last updated on 2026-06-17.

CVE-2021-31294

CVE-2021-31294 is a medium-severity vulnerability in Redis with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-617
Affected product: Redis
Published: 2023-07-15
Last modified: 2026-06-17

Description

Redis before 6cbea7d allows a replica to cause an assertion failure in a primary server by sending a non-administrative command (specifically, a SET command). NOTE: this was fixed for Redis 6.2.x and 7.x in 2021. Versions before 6.2 were not intended to have safety guarantees related to this.

Frequently asked questions

What is CVE-2021-31294?: Redis before 6cbea7d allows a replica to cause an assertion failure in a primary server by sending a non-administrative command (specifically, a SET command). NOTE: this was fixed for Redis 6.2.x and 7.x in 2021. Versions before 6.2 were not intended to have safety guarantees related to this.
How severe is CVE-2021-31294?: CVE-2021-31294 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-31294 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31294?: CVE-2021-31294 affects Redis. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31294?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-31294 published?: CVE-2021-31294 was published on 2023-07-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*

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