CVE-2022-0543
CVE-2022-0543 is a security flaw in Redis Debian-specific Redis Servers. Attackers can run their own code on Redis Debian-specific Redis Servers. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 28 Mar 2022.[1]
Redis Debian-specific Redis Servers is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Redis has published a fix or advice.
Description
CISA calls it a debian-specific redis server lua sandbox escape in Redis Debian-specific Redis Servers. In its words: “Redis is prone to a (Debian-specific) Lua sandbox escape, which could result in remote code execution.”[1]
The CVE record adds: “It was discovered, that redis, a persistent key-value database, due to a packaging issue, is prone to a (Debian-specific) Lua sandbox escape, which could result in remote code execution.”[2]
The underlying weakness is missing authorization (CWE-862), in MITRE’s list of common software weaknesses.
It scores 10.0 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Redis’s advisory has them[3]. CISA names the product as Redis Debian-specific Redis Servers.
Most families won’t have Redis Debian-specific Redis Servers; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 28 Mar 2022, 38 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 18 Apr 2022 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 99%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Redis has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Check whether you use it.Redis Debian-specific Redis Servers is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 18 Apr 2022 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 10.0.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 99%.[4] |
See also
Other missing authorization flaws
- CVE-2024-57726, SimpleHelp: missing authorization ·
- CVE-2023-52163, Digiever DS-2105 Pro: missing authorization ·
- CVE-2025-40602, SonicWall SMA1000 appliance: sMA1000 missing authorization ·
- CVE-2025-6205, Dassault Systèmes DELMIA Apriso: missing authorization ·
- CVE-2025-20362, Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense: secure firewall adaptive security (ASA) appliance and secure firewall threat defense (FTD) missing authorization ·
Added the same day
- CVE-2022-1096, Chrome and other Chromium browsers: type confusion ·
- CVE-2021-38646, Microsoft Office: access connectivity engine remote code execution ·
- CVE-2021-34486, Microsoft Windows: event tracing privilege escalation ·
- CVE-2021-26085, Atlassian Confluence Server: pre-authorization arbitrary file read ·
- CVE-2021-20028, SonicWall Secure Remote Access (SRA): SQL injection ·
References
- ^ Cybersecurity and Infrastructure Security Agency. “Debian-specific Redis Server Lua Sandbox Escape Vulnerability”. Known Exploited Vulnerabilities Catalog, added 28 Mar 2022.
- ^ National Institute of Standards and Technology. “CVE-2022-0543 Detail”. National Vulnerability Database, published 18 Feb 2022.
- ^ Redis. Advisories and fixes: bugs.debian.org.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.994, percentile 99.9, 31 Oct 2026.
- CVE Program. “CVE-2022-0543”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.