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Redis EUVDEUVD-2026-55238

| CVE-2026-72568 HIGH
Out-of-bounds Read (CWE-125)
2026-08-10 TuranSec GHSA-qhgh-7273-8939
Buffer Overflow Denial Of Service Information Disclosure Redis Red Hat Suse
7.1
CVSS 3.1 · Vendor: TuranSec
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Severity by source

Vendor (TuranSec) PRIMARY
7.1 HIGH
AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
vuln.today AI
7.1 HIGH

AV:A confirmed by Cluster Bus adjacency requirement; PR:N because the Cluster Bus port requires no authentication; A:H for process crash; C:L for partial heap read; I:N as no write primitive exists.

3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
7.1 HIGH
qualitative

Primary rating from Vendor (TuranSec).

CVSS VectorVendor: TuranSec

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch available
Aug 10, 2026 - 12:17 EUVD
Analysis Generated
Aug 10, 2026 - 11:17 vuln.today
CVE Published
Aug 10, 2026 - 10:40 cve.org
HIGH 7.1

DescriptionCVE.org

An out-of-bounds read vulnerability in Redis through 8.8.1 allows an adjacent unauthenticated attacker to cause denial of service or information disclosure by sending a specially crafted PING message to the Redis Cluster Bus port. The getPingExtLength() function in the cluster bus message parser does not validate extension length fields against the actual remaining buffer size, allowing an attacker-controlled packet to cause the parser to read beyond the allocated buffer boundary.

AnalysisAI

Out-of-bounds read in Redis Cluster Bus PING message parsing affects Redis through version 8.8.1, enabling adjacent unauthenticated attackers to trigger denial of service or extract limited heap memory contents. The root cause is in the getPingExtLength() function, which fails to validate extension length fields against the actual remaining buffer size, allowing a crafted gossip-protocol PING packet to drive the parser past the allocated buffer boundary. No public exploit has been identified at time of analysis, and this vulnerability has not been confirmed in the CISA KEV catalog.

Technical ContextAI

Redis is an open-source in-memory data structure store commonly deployed as a cache, message broker, and session store. When configured in cluster mode, Redis nodes communicate using a proprietary gossip protocol over the Cluster Bus port (default 16379), distinct from the standard client port (6379). The affected CPE cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:* covers all Redis versions through 8.8.1. CWE-125 (Out-of-Bounds Read) is the root cause class: the getPingExtLength() function in the cluster bus message parser reads attacker-supplied extension length values from a PING message without bounding them against the remaining allocated buffer, causing the parser to access memory beyond the packet boundary. This can result in a process crash (availability impact) or exposure of adjacent heap memory contents (limited confidentiality impact).

RemediationAI

Upgrade Redis to a version beyond 8.8.1 once a patched release is confirmed by the vendor; monitor https://redis.io/ and https://github.com/redis/redis/releases for a security release addressing this parser flaw. No specific patched version number was provided in the available input data, so a released patched version is not independently confirmed at time of analysis. As a compensating control, restrict access to the Redis Cluster Bus port (default TCP 16379) using host-based firewall rules or network ACLs so that only trusted cluster peer nodes can reach it - this directly eliminates the adjacent-network attack surface for untrusted parties. If Redis is not deployed in cluster mode, disabling cluster mode eliminates the vulnerable code path entirely. Ensure Redis Cluster Bus ports are placed on isolated management VLANs or security groups separate from general-purpose network segments. These network controls carry no functional trade-off for standard deployments and should be applied regardless of patch status.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Server 16.1 Affected

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EUVD-2026-55238 vulnerability details – vuln.today
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