CVE-2026-66373

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

0.89% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.6% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-08-07.

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.

Published

2026-07-25 00:08Z1 MO AGO

Last updated

2026-08-07 00:01Z29 DAYS AGO

Reserved

2026-07-25

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-415Double FreeVariant
• CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.2

Document digest

5301323087761a9ae1fcab0e9d905c2dda571e46fc6f1d1fc3252e1c73f029e3

• github.comhttps://github.com/redis/redis/pull/15081
• github.comhttps://github.com/redis/redis/compare/8.6.4...8.8.0
• x.comhttps://x.com/Fried_rice/status/2080059356322918777
• github.comhttps://github.com/berabuddies/redis-poc
• news.ycombinator.comhttps://news.ycombinator.com/item?id=49024938
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2026/08/msg00012.html