CVE-2022-24736

Server crash via malformed Lua script loading

Published Apr 27, 2022 · Updated Apr 22, 2025

NULL pointer dereference in Redis before 6.2.7 and before 7.0.0 allows local users to crash redis-server via a crafted Lua script. The luaCreateFunction path concatenates the script body into a generated global function and passes that composite to luaL_loadbuffer, allowing attacker-controlled syntax to execute during compilation and reach the invalid state. The user must have Redis access permitting SCRIPT LOAD or EVAL; successful exploitation terminates the server rather than reading or changing stored data.

CVSS severity3.3
Low
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Redis before 6.2.7 and before 7.0.0 allows local users to crash redis-server via a crafted Lua script. The luaCreateFunction path concatenates the script body into a generated global function and passes that composite to luaL_loadbuffer, allowing attacker-controlled syntax to execute during compilation and reach the invalid state. The user must have Redis access permitting SCRIPT LOAD or EVAL; successful exploitation terminates the server rather than reading or changing stored data.

The record

CVE
CVE-2022-24736
Published
Apr 27, 2022
Updated
Apr 22, 2025
Vendor
Redis
Product
Redis
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=< 6.2.7
  2. Affected versionversion=< 7.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Redis · Redisversion=< 6.2.7; version=< 7.0.0

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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