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Vulnerabilities

Vulnerability · CVE-2025-32023

Out of bounds write in hyperloglog commands leads to RCE

Published Jul 6, 2025 · catalog updated Jun 17, 2026 · Out of bounds write

Last checked Oct 31, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-32023. EPSS is 6.47%. Act only if a listed version of Out of bounds write is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Out of bounds write).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
6.47%
Remediation
Version ranges on file
Affected products
cpe redis/redis

### Impact An authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. ### Workarounds An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing hyperloglog operations. This can be done using ACL to restrict HLL commands. ### Credit Seunghyun Lee (@0x10n) of CMU PPP, as part of PlaidCTF 2025 ### For more information If you have any questions or comments about this advisory: * Open an issue in [the Redis repository](https://github.com/redis/redis) * Email us at redis@redis.io

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redis/redis< 6.2.19
  • cpe redis/redis< 7.2.10
  • cpe redis/redis< 7.4.5
  • cpe redis/redis< 8.0.3

How to fix CVE-2025-32023

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-32023. EPSS is 6.47%. Act only if a listed version of Out of bounds write is installed.

Which versions are affected?

Compare what you have installed with < 6.2.19, < 7.2.10, < 7.4.5, < 8.0.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-680. EPSS 6.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Redis security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 7, 2025 · Monitored products — high

    Detected

    CVE-2025-32023 is listed by Redis is an open source, in-memory database that persists on disk..

  2. Jun 17, 2026 · Monitored products — high

    Updated

    CVE-2025-32023 is listed by Redis is an open source, in-memory database that persists on disk..

Sources

  • FIRST EPSSExploitation probabilityCVE-2025-32023

    30-day exploitation probability 6.47%

    first.org
  • Maintainer security tabsVendor advisoryGHSA-rp2m-q4j6-gr43

    ### Impact An authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. ### Workarounds An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users fr

    github.com
  • Monitored products — highVendor advisoryCVE-2025-32023

    Redis is an open source, in-memory database that persists on disk. From 2.8 to before 8.0.3, 7.4.5, 7.2.10, and 6.2.19, an authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. This vulnerability is f

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 31, 2026
  • Maintainer security tabsOct 31, 2026
  • Monitored products — highOct 31, 2026