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01 Record

CVE-2025-49844

Redis Lua Use-After-Free may lead to remote code execution

CriticalPUBLISHEDCNA: GitHub_M
CNA base score10.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
View raw JSON

02 Description

Redis Lua Use-After-Free may lead to remote code execution

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
82.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.6% of scored records. A rank, not a probability.
NVD base score
9.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-19.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-10-03 19:27Z1 YR AGO
Last updated
2026-03-20 14:08Z7 MO AGO
Reserved
2025-06-11
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Critical (CVSS 10.0)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
Data version
5.2
Document digest
893a86f526bf33243da0336b09be61286aa384cdcba52579d45d2df994d2b08d

05 Affected products

VendorProductVersionsPlatforms
redisredis< 8.2.2—

06 References

07 Fixed in

AlmaLinux 8

  • redis
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0
  • redis-devel
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0
  • redis-doc
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • redis
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • redis-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • redis-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • valkey
    Fixed in 8.0.6-2.el9_7
  • valkey-devel
    Fixed in 8.0.6-2.el9_7

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • valkey
    Fixed

    A version is affected if any line below covers it.

    • Affected before 8.0.6-1.el10_0
    • Affected before 8.0.6-2.el10_1
  • valkey-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 8.0.6-1.el10_0
    • Affected before 8.0.6-2.el10_1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • redis
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0
  • redis-devel
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0
  • redis-doc
    Fixed in 6.2.20-1.module_el8.10.0+4056+739731b0

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • redis
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • redis-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • redis-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 6.2.20-1.el9_6
    • Affected before 6.2.20-2.el9_7
    • Affected before 7.2.11-1.module_el9.6.0+188+92104ce8
  • valkey
    Fixed in 8.0.6-2.el9_7
  • valkey-devel
    Fixed in 8.0.6-2.el9_7

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • valkey
    Fixed

    A version is affected if any line below covers it.

    • Affected before 8.0.6-1.el10_0
    • Affected before 8.0.6-2.el10_1
  • valkey-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 8.0.6-1.el10_0
    • Affected before 8.0.6-2.el10_1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • redis
    Fixed in 5:7.0.15-1~deb12u6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • redis
    Fixed in 5:8.0.2-3+deb13u1
  • valkey
    Fixed in 8.1.1+dfsg1-3+deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • redict
    Fixed in 7.3.6+ds-1
  • redis
    Fixed in 5:8.0.4-1
  • valkey
    Fixed in 8.1.4+dfsg1-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • lua5.1
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • lua50
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • lua5.1
    No fix yet
  • lua50
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • lua50
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • lua5.1
    No fix yet
  • redis
    Fixed in 5:7.0.15-1ubuntu0.24.04.2
  • valkey
    Fixed in 7.2.11+dfsg1-0ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • lua5.1
    No fix yet
  • redict
    Fixed in 7.3.5+ds-1ubuntu0.1
  • redis
    Fixed in 5:8.0.2-3ubuntu0.25.10.1
  • valkey
    Fixed in 8.1.4+dfsg1-0ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • lua5.1
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • lua5.1
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • redis
    Fixed in 2:2.8.4-2ubuntu0.2+esm5
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • redis
    Fixed in 2:3.0.6-1ubuntu0.4+esm4
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • redis
    Fixed in 5:4.0.9-1ubuntu0.2+esm6
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • lua5.1
    Fixed in 5.1.5-8.1ubuntu0.20.04.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • redis
    Fixed in 5:5.0.7-2ubuntu0.1+esm4
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 22.04 LTS

  • lua5.1
    Fixed in 5.1.5-8.1ubuntu0.22.04.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.