# CVE-2026-81934 — Redis

> As of 2026-08-28, CVE-2026-81934 is a CRITICAL-severity vulnerability in Redis, CVSS v3.1 9.8, EPSS 0.5% (45.3th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-81934 as of 2026-08-28; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-28

## What is CVE-2026-81934?

Redis contains a use-after-free vulnerability in the 'tlsProcessPendingData()' function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server. Fixed in Redis 8.2.9, 8.4.6, 8.6.6, 8.8.2, and 8.10.1.

The record classifies CVE-2026-81934 under weakness class [CWE-416](https://intel.threadlinqs.com/cwe/CWE-416). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 39 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 9.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.5% probability of exploitation in the next 30 days, higher than 45.3% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-27, last modified 2026-08-28

## Is CVE-2026-81934 being exploited?

It currently carries a trending score of 41 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Redis**: Redis

## How to fix CVE-2026-81934

No vendor patch reference has been recorded for CVE-2026-81934 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-81934

No threat campaign in the Threadlinqs corpus currently references CVE-2026-81934, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-08-30. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834)
- [raw.githubusercontent.com — release notes](https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES)
- [raw.githubusercontent.com — release notes (00 RELEASENOTES)](https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES)
- [raw.githubusercontent.com — release notes (00 RELEASENOTES)](https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES)
- [raw.githubusercontent.com — release notes (00 RELEASENOTES)](https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES)

**Exploit and proof of concept**

- [github.com — exploit](https://github.com/v12-security/pocs/tree/main/redis/server_ssl)

_Showing 6 of 7 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-81934
Full detection coverage and IOCs for threats exploiting CVE-2026-81934 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp