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01 Record

CVE-2026-23479

redis-server use-after-free in unblock client flow may allow remote code execution

HighPUBLISHEDCNA: GitHub_M
CNA base score7.7 CVSS v4.0CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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02 Description

redis-server use-after-free in unblock client flow may allow remote code execution

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • 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
2.61% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 85.3% of scored records. A rank, not a probability.
NVD base score
7.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Modified. NVD last modified this record on 2026-07-25.
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
2026-05-05 16:36Z5 MO AGO
Last updated
2026-07-16 12:04Z3 MO AGO
Reserved
2026-01-13
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
Data version
5.2
Document digest
ded0a12fa80417599bdc36ee0a09d63b19b57728d472f030ddbbe49cd003f655

05 Affected products

VendorProductVersionsPlatforms
redisredis>= 7.2.0, < 8.6.3—

06 References

07 Fixed in

AlmaLinux 9

  • redis
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • redis-devel
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • redis-doc
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • valkey
    Fixed in 8.0.9-1.el9_8
  • valkey-devel
    Fixed in 8.0.9-1.el9_8

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 in 8.0.9-1.el10_2
  • valkey-devel
    Fixed in 8.0.9-1.el10_2

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

CloudLinux 9

  • redis
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • redis-devel
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • redis-doc
    Fixed in 7.2.14-1.module_el9.8.0+258+b8f945d3
  • valkey
    Fixed in 8.0.9-1.el9_8
  • valkey-devel
    Fixed in 8.0.9-1.el9_8

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 in 8.0.9-1.el10_2
  • valkey-devel
    Fixed in 8.0.9-1.el10_2

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 13

  • redis
    Fixed in 5:8.0.2-3+deb13u3
  • valkey
    Fixed in 8.1.1+dfsg1-3+deb13u3

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

Debian 14

  • redict
    No fix yet
  • redis
    Fixed in 5:8.0.6-3
  • valkey
    Fixed in 9.1.1-1

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

Ubuntu 24.04 LTS

  • redis
    No fix yet

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

Ubuntu 25.10

  • redis
    No fix yet

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

Ubuntu 26.04 LTS

  • redis
    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

  • redis
    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
    No fix yet

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
    No fix yet

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
    No fix yet

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

Ubuntu Pro 20.04 LTS

  • redis
    No fix yet

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

Ubuntu Pro 22.04 LTS

  • redis
    No fix yet

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.