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VulnerabilityCVE-2026-25243Published 2026-05-05

CVE-2026-25243 — redis

highPublic exploit3 PoC repos

As of 2026-07-16, CVE-2026-25243 is a HIGH-severity vulnerability in redis, CVSS v3.1 8.8, EPSS 3.6% (89.3th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-25243, most recently “Redis Streams Shared-NACK Double-Free (CVE-2026-25243) & RedisBloom RESTORE/TDigest Heap Overflow (CVE-2026-25589) — Authenticated RCE, Public PoC, Patch Bypass”.

CVSS v3.1
8.8/10High
EPSS
3.6%Higher than 89.3% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
10/10Threadlinqs triage score
Published
Updated 2026-07-16
CVSS v3.1 8.8 (HIGH) · CVSS v4.0 7.7 · EPSS 3.6% (higher than 89.3% of all scored CVEs) · Priority 10/10 · Published 2026-05-05

Last updated:

What is CVE-2026-25243?

Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE 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 is patched in version 8.6.3.

The record classifies CVE-2026-25243 under weakness class CWE-122. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 158 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0 base score
7.7
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
EPSS (FIRST)
3.6% probability of exploitation in the next 30 days, higher than 89.3% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-05-05, last modified 2026-07-16

Is CVE-2026-25243 being exploited?

Weaponised exploit code for CVE-2026-25243 is publicly available. 3 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-25243

No vendor patch reference has been recorded for CVE-2026-25243 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-25243

1 tracked threat in the Threadlinqs corpus references CVE-2026-25243, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .

Vendor advisory and patch

Other references