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CVE-2025-21605VulnerabilityPublished Updated

Red Hat Security Advisory: redis:6 security update

Affects Red Hat redisSource GCVE Database

0

Not known to be exploited : upgrade the Red Hat redhat/redis package to 6.2.18 soon.

Data as of 26 Oct 2026, 12:55 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.
Patch
Available – fixed in 6.2.18

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade the Red Hat redhat/redis package to 6.2.18.

Affected software

ProductAffectedFixed in
Red Hatredhat/redispkg:rpm/redhat/redisOther threatsAffected
  • <6.2.18 >=6.2.0
Fixed in
  • 6.2.18

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can contain strings, hashes, lists, sets, and sorted sets. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log. Security Fix(es): * redis: Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated client (CVE-2025-21605) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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