Public proof of conceptFix available

CVE-2026-25589

Q: Is CVE-2026-25589 actively exploited?

Active exploitation of CVE-2026-25589 has not been confirmed. Its EPSS score was 1.7% on 2026-10-25, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-25589?

CVE-2026-25589 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-05-05
Fixed in8.6.3 · 8.4.3 · 8.2.6
WeaknessCWE-122

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

RedisBloom is a probabilistic data structures module for Redis. In all versions of RedisBloom before 2.8.20, the module does not properly validate serialized values processed through the Redis RESTORE command. An authenticated attacker with permission to execute RESTORE on a server with the RedisBloom module loaded can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This issue is fixed in version 2.8.20.

Timeline

dates in UTC

2026-05-0517:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-25 15:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-25589?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-25589?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

redis

Branch	Affected	Fixed in	Source
8.x	≥ 8.5.0, < 8.6.3	8.6.3	OSV
8.x	≥ 8.3.0, < 8.4.3	8.4.3	OSV
8.x	≥ 8.0.0, < 8.2.6	8.2.6	OSV

keydb

Branch	Affected	Fixed in	Source
8.x	≥ 8.5.0, < 8.6.3	8.6.3	OSV
8.x	≥ 8.3.0, < 8.4.3	8.4.3	OSV
8.x	≥ 8.0.0, < 8.2.6	8.2.6	OSV

Redisbloom

Branch	Affected	Fixed in	Source
2.8	< 2.8.20	2.8.20	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2026-25589 Red Hat Product Security1 known affected
RedisBloom: RESTORE invalid memory access may allow remote code execution
ansible-automation-platform-27/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2

Full record on NVD

Fix

Update redis to 8.6.3 · 8.4.3 · 8.2.6
Workaround from the vendor Red Hat Product Security CVE-2026-25589 · 1 productTo mitigate this vulnerability, restrict the execution privileges of the RESTORE command exclusively to highly trusted and administrative users by using the appropriate ACL rules.
No fix available, says the vendor Red Hat Product Security CVE-2026-25589 · 1 productAffected

Advisories and patches

github.comPatch
github.comMitigation · Vendor Advisory

Detection

read 2026-10-25 00:28 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedmgiay/CVE-2026-25589-25588-25243-23631-23479-REDIS

Sources

CISA-ADPSSVC decisionnone2026-05-05
OpenCVESSVC decisionnone—
CNACVSS 4.07.7read 2026-10-23
NVDCVSS 3.18.8read 2026-10-23
CNAweakness (CWE)CWE-122read 2026-10-23
FIRST EPSSEPSS score1.7 %2026-10-25
PoC-in-GitHubproof of concept1read 2026-10-25
OSVaffected packages—
Microsoft MSRCadvisory—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: 2026-05-05
Last Modified: 2026-07-25
NVD status: Analyzed
MSRC Title: RedisBloom RESTORE invalid memory access may allow remote code execution

Frequently asked questions

What is CVE-2026-25589?

Is CVE-2026-25589 actively exploited?

Active exploitation of CVE-2026-25589 has not been confirmed. Its EPSS score was 1.7% on 2026-10-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25589?

CVE-2026-25589 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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