CYBERSECURITYTRACKER
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Vulnerabilities

CVE-2025-49844

Review this vulnerability's source-backed evidence, with unavailable values and read failures kept distinct.

A permanent, source-backed tracker page. Values are shown only when returned; explicit gaps and read failures remain different states.

Full record read. Reported values and explicit gaps below come from the tracked record. Tracker data as of: .

Detection and validation

Mapped metadata availability only. These signals do not change priority.

  • Sigma

    Not mapped by tracked sources.

  • Atomic

    Not mapped by tracked sources.

  • Nuclei

    Redis Lua Parser < 8.2.2 - Use After Free. Check identifier: CVE-2025-49844.

    Open Nuclei metadata

  • Metasploit

    Not mapped by tracked sources.

What it is

Reported

Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.

Source reported · Source: NVD · Source last published: · Source description excerpt; complete tracked detail loads below. · Source last updated: · Tracker data as of:

What is affected

Reported

redis; redis. Product-level identification only; no affected-version conclusion is available from this field.

Source reported · Source: NVD · Source last published: · Source last updated: · Tracker data as of:

Urgency and basis

Reported

Act now · 566.1

Tracker computed · Tracker decision tier from the evidence detailed below · Source last updated: · Tracker data as of:

Exploitation evidence

Reported

listed by a tracked exploitation catalog · VulnCheck KEV

Source reported · VulnCheck KEV added: · Source last updated: · Tracker data as of:

What to do

Reported

Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Source remediation ↗

Source reported · Tracked source remediation field · Source last updated: · Tracker data as of:

Evidence detail

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Glossary

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