Security readout for executives and security teams
Plain-English summary
A Redis replica could crash its primary server by sending an unexpected non-administrative command. The main business risk is service disruption in Redis-backed applications. The sources do not show active exploitation, CVSS scoring, or broad remote exposure details.
Executive priority
Treat this as an availability risk for Redis-backed services, especially production systems using replication. Prioritize confirmation and vendor-supported upgrades over emergency response unless internal evidence shows crashes or suspicious replica behavior.
Technical view
CVE-2021-31294 describes an assertion failure in Redis primary-server handling of replica-originated commands before commit 6cbea7d. The issue was fixed for Redis 6.2.x and 7.x in 2021. The CVE notes versions before 6.2 were not intended to provide related safety guarantees.
Likely exposure
Exposure is most relevant where Redis replication is configured and a replica can communicate with a primary. The bundle does not define exact affected versions, distributions, or NetApp product impact details.
Exploitation context
No KEV listing is provided, and the supplied sources do not report active exploitation. Practical abuse appears to require replica-to-primary communication or control of a replica path, based on the CVE description.
Researcher notes
The public record is sparse: no CVSS, CWE, or precise version list is included. Analysis should stay anchored to the Redis issue, fix commits, and vendor advisories, and avoid assuming exploitability beyond replica-triggered primary assertion failure.
Mitigation direction
- Identify Redis instances using replication.
- Confirm whether deployed Redis includes commit 6cbea7d or later fixes.
- Upgrade Redis 6.2.x or 7.x using vendor-supported releases.
- For packaged Redis, check vendor advisories and supported update channels.
- Review NetApp guidance if Redis is embedded in affected NetApp products.
Validation and detection
- Inventory Redis server versions and replication roles.
- Check vendor release notes or package changelogs for the referenced fix commits.
- Review Redis logs for unexpected assertion failures on primary servers.
- Confirm replicas are trusted and access-controlled.
- Document unsupported pre-6.2 deployments separately for risk acceptance or upgrade planning.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-31294 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/redis/redis/issues/8712CVE reference
- https://github.com/redis/redis/commit/6cbea7d29b5285692843bc1c351abba1a7ef326fCVE reference
- https://github.com/redis/redis/commit/46f4ebbe842620f0976a36741a72482620aa4b48CVE reference
- https://security.netapp.com/advisory/ntap-20230814-0007/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.