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NVD / CVE Program· CNA GitHub_M

CVE-2025-32023: Redis allows out of bounds writes in hyperloglog commands leading to RCE

Noroxi assessment

Priority: Monitor (action score 33/100)

  • Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 6.4% (FIRST EPSS); higher than 93.7% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: redis redis 8.0.3; azl3 valkey 8.0.3-3 on Azure Linux 3.0 8.0.4-1; azl3 valkey 8.0.4-1 on Azure Linux 3.0 8.0.4-1.

Low priority for now. Upgrade to redis redis 8.0.3; azl3 valkey 8.0.3-3 on Azure Linux 3.0 8.0.4-1; azl3 valkey 8.0.4-1 on Azure Linux 3.0 8.0.4-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Redis is an open source, in-memory database that persists on disk. From 2.8 to before 8.0.3, 7.4.5, 7.2.10, and 6.2.19, an authenticated user may use a specially crafted string to trigger a stack/heap out of bounds write on hyperloglog operations, potentially leading to remote code execution. The bug likely affects all Redis versions with hyperloglog operations implemented. This vulnerability is fixed in 8.0.3, 7.4.5, 7.2.10, and 6.2.19. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing hyperloglog operations. This can be done using ACL to restrict HLL commands.

HighCVSS 7.8 · v3.1—Proof of concept Fix available
Published
Jul 7, 2025
Updated
Jun 17, 2026
EPSS
6.4% · 93th percentile

Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 6.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · GitHub_M
7.0
0.8 point gap

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

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Follow CVE-2025-32023

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redisredis

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Watch new CVEs for redis

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

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Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redis redis2.8.0 and later · before 6.2.19
  • redis redis7.2.0 and later · before 7.2.10
  • redis redis7.4.0 and later · before 7.4.5
  • redis redis8.0.0 and later · before 8.0.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • redis redis

    • >= 8.0.0, < 8.0.3, >= 7.4-rc1, < 7.4.5, >= 7.0.0, < 7.2.10, >= 2.8.0, < 6.2.19affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10valkeybefore 8.0.4-1.el10_08.0.4-1.el10_0
AlmaLinux:10valkey-develbefore 8.0.4-1.el10_08.0.4-1.el10_0
AlmaLinux:8redisbefore 6.2.19-1.module_el8.10.0+4030+0c7fcc006.2.19-1.module_el8.10.0+4030+0c7fcc00
AlmaLinux:8redis-develbefore 6.2.19-1.module_el8.10.0+4030+0c7fcc006.2.19-1.module_el8.10.0+4030+0c7fcc00
AlmaLinux:8redis-docbefore 6.2.19-1.module_el8.10.0+4030+0c7fcc006.2.19-1.module_el8.10.0+4030+0c7fcc00
AlmaLinux:9redisbefore 7.2.10-1.module_el9.6.0+173+efaf92057.2.10-1.module_el9.6.0+173+efaf9205
AlmaLinux:9redis-develbefore 7.2.10-1.module_el9.6.0+173+efaf92057.2.10-1.module_el9.6.0+173+efaf9205
AlmaLinux:9redis-docbefore 7.2.10-1.module_el9.6.0+173+efaf92057.2.10-1.module_el9.6.0+173+efaf9205
Alpine:v3.20valkeybefore 7.2.11-r07.2.11-r0
Alpine:v3.22valkeybefore 8.1.1-r28.1.1-r2
Debian:11redisbefore 5:6.0.16-1+deb11u75:6.0.16-1+deb11u7
Debian:12redisbefore 5:7.0.15-1~deb12u55:7.0.15-1~deb12u5
Debian:13redisbefore 5:8.0.2-25:8.0.2-2
Debian:13valkeybefore 8.1.1+dfsg1-38.1.1+dfsg1-3
Debian:14redictbefore 7.3.5+ds-17.3.5+ds-1
openSUSE:Leap 15.6redisbefore 7.2.4-150600.3.15.17.2.4-150600.3.15.1
openSUSE:Leap 15.6redis7before 7.0.8-150600.8.16.17.0.8-150600.8.16.1
openSUSE:Leap 15.6valkeybefore 8.0.2-150600.13.14.18.0.2-150600.13.14.1
openSUSE:Tumbleweedredisbefore 8.0.3-1.18.0.3-1.1
openSUSE:Tumbleweedvalkeybefore 8.1.3-1.18.1.3-1.1
Red Hat:enterprise_linux:10.0valkeybefore 0:8.0.4-1.el10_00:8.0.4-1.el10_0
Red Hat:enterprise_linux:10.0valkey-debuginfobefore 0:8.0.4-1.el10_00:8.0.4-1.el10_0
Red Hat:enterprise_linux:10.0valkey-debugsourcebefore 0:8.0.4-1.el10_00:8.0.4-1.el10_0
Red Hat:enterprise_linux:10.0valkey-develbefore 0:8.0.4-1.el10_00:8.0.4-1.el10_0

+61

Same product

redis: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0543It was discovered, that redis, a persistent key-value database, due to a packaging issue, is prone to a (Debian-specific) Lua sandbox escapeKEV
    100Now
  • CVE-2025-49844Redis Lua Use-After-Free may lead to remote code execution
    64This week
  • CVE-2023-36824Heap overflow in COMMAND GETKEYS and ACL evaluation in Redis
    58Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-21605Apr 23, 2025 · Redis DoS Vulnerability due to unlimited growth of output buffers abused by unauthenticated client
    30Monitor
  • ← EarlierCVE-2025-27151May 29, 2025 · redis-check-aof may lead to stack overflow and potential RCE
    39Monitor
  • Later →CVE-2025-48367Jul 7, 2025 · Redis DoS Vulnerability due to bad connection error handling
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
redis redis8.0.3 · descriptionVendor (CNA)
azl3 valkey 8.0.3-3 on Azure Linux 3.08.0.4-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 valkey 8.0.4-1 on Azure Linux 3.08.0.4-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 redis 6.2.18-1 on CBL Mariner 2.06.2.18-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 redis 6.2.18-2 on CBL Mariner 2.06.2.18-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:redis6.2.19-1.module_el8.10.0+4030+0c7fcc00 · AlmaLinux:8Package registry (OSV)
almalinux:redis-devel6.2.19-1.module_el8.10.0+4030+0c7fcc00 · AlmaLinux:8Package registry (OSV)
almalinux:redis-doc6.2.19-1.module_el8.10.0+4030+0c7fcc00 · AlmaLinux:8Package registry (OSV)
almalinux:valkey8.0.4-1.el10_0 · AlmaLinux:10Package registry (OSV)
almalinux:valkey-devel8.0.4-1.el10_0 · AlmaLinux:10Package registry (OSV)
alpine:valkey7.2.11-r0 · Alpine:v3.20Package registry (OSV)
debian:redict7.3.5+ds-1 · Debian:14Package registry (OSV)
debian:redis5:7.0.15-1~deb12u5 · Debian:12Package registry (OSV)
debian:valkey8.1.1+dfsg1-3 · Debian:13Package registry (OSV)
opensuse:redis7.2.4-150600.3.15.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:redis77.0.8-150600.8.16.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:valkey8.0.2-150600.13.14.1 · openSUSE:Leap 15.6Package registry (OSV)
red hat:redis0:6.2.19-1.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:redis-debuginfo0:6.2.19-1.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:redis-debugsource0:6.2.19-1.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:redis-devel0:6.2.19-1.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:redis-doc0:6.2.19-1.el9_6 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:valkey0:8.0.4-1.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:valkey-debuginfo0:8.0.4-1.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:valkey-debugsource0:8.0.4-1.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
red hat:valkey-devel0:8.0.4-1.el10_0 · Red Hat:enterprise_linux:10.0Package registry (OSV)
rocky linux:redis0:6.2.19-1.el9_6 · Rocky Linux:9Package registry (OSV)
rocky linux:valkey0:8.0.4-1.el10_0 · Rocky Linux:10Package registry (OSV)
suse:redis6.0.14-150200.6.40.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:redis7.2.4-150600.3.15.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP6Package registry (OSV)

+2

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1
  • Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2026-02-04
Proof-of-concept repository on GitHubstars:2142025-07-06
Proof-of-concept repository on GitHubstars:02025-07-13

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-2 d
  2. Published
  3. TodayOct 30, 2026+480 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-680 · Integer Overflow to Buffer Overflow

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records