CVE-2025-62507Public exploitNetwork attack vector

Authenticated code execution via XACKDEL ID overflow

Published Nov 4, 2025 · Updated Nov 4, 2025

Stack-based buffer overflow in Redis 8.2.0 through 8.2.2 allows remote authenticated users to execute code via XACKDEL. The xackdelCommand function writes supplied stream IDs past the eight-entry static_ids stack array because it omits heap reallocation above STREAMID_STATIC_VECTOR_LEN. Access permitting XACKDEL and a stream consumer group are required; successful exploitation can crash the server or execute code in its process.

CVSS severity7.7
High
EPSS probability6.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Redis 8.2.0 through 8.2.2 allows remote authenticated users to execute code via XACKDEL. The xackdelCommand function writes supplied stream IDs past the eight-entry static_ids stack array because it omits heap reallocation above STREAMID_STATIC_VECTOR_LEN. Access permitting XACKDEL and a stream consumer group are required; successful exploitation can crash the server or execute code in its process.

The record

CVE
CVE-2025-62507
Published
Nov 4, 2025
Updated
Nov 4, 2025
Vendor
Redis
Product
Redis
Classifications
CWE-121, CWE-787, CWE-20, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 8.2.0, < 8.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Redis · Redisversion=>= 8.2.0, < 8.2.3

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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