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CVE-2025-21605VulnerabilityPublished Updated

Red Hat Security Advisory: redis security update

Affects Red Hat redisSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 22:06 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.8% chance of exploitation in 30 days – higher than 58% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

AI-suggested

Red Hat has released updated Redis packages (version 6.2.6-1.el9_0.2) for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions that fix this vulnerability. Users should apply these updates promptly to remediate the issue. Refer to Red Hat's official advisory and update instructions at https://access.redhat.com/articles/11258 for detailed guidance.

Description

A denial-of-service (DoS) vulnerability exists in Redis due to unlimited growth of output buffers that can be abused by unauthenticated clients. This issue affects Redis as packaged in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. The vulnerability allows unauthenticated clients to cause resource exhaustion by exploiting output buffer growth. Red Hat has released an update to address this issue.

References

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