# CVE-2023-52271

> As of 2025-06-03, CVE-2023-52271 is a MEDIUM-severity vulnerability, CVSS v3.1 6.5, EPSS 0.3% (21.5th percentile). Threadlinqs Intelligence links 3 tracked threat campaigns to CVE-2023-52271, most recently “SilverFox APT Deploys Advanced ValleyRAT Campaign Against Japanese Manufacturer via DLL Sideloading and BYOVD”.

**Last updated:** 2025-06-03

## What is CVE-2023-52271?

The wsftprm.sys kernel driver 2.0.0.0 in Topaz Antifraud allows low-privileged attackers to kill any (Protected Process Light) process via an IOCTL (which will be named at a later time).

Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on availability. The identifier was first published 986 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.5 — MEDIUM (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 21.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2024-01-08, last modified 2025-06-03

## Is CVE-2023-52271 being exploited?

Weaponised exploit code for CVE-2023-52271 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier.

- [victoni/BYOVD-CVE-2023-52271-POC](https://github.com/victoni/BYOVD-CVE-2023-52271-POC) (github)
- [trickest/cve](https://github.com/trickest/cve/blob/main/2023/CVE-2023-52271.md) (trickest)

## Affected products and versions

No affected-product or package list has been recorded for CVE-2023-52271 in the tracked sources. The vendor advisory and the references below are the authoritative statement of what is affected.

## How to fix CVE-2023-52271

No vendor patch reference has been recorded for CVE-2023-52271 in the tracked sources. Follow the references below for a fix, and treat any affected deployment as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2023-52271

3 tracked threats in the Threadlinqs corpus reference CVE-2023-52271, either in the campaign’s CVE list or as an indicator on the campaign record.

- [SilverFox APT Deploys Advanced ValleyRAT Campaign Against Japanese Manufacturer via DLL Sideloading and BYOVD](https://intel.threadlinqs.com/threat/TL-2026-1787) — HIGH · 2026-07-31
- [DragonForce 'Backdoor.Turn' Abuses Microsoft Teams TURN Relays to Conceal Ransomware C2 (Go RAT, BYOVD, CVE-2023-52271 / CVE-2025-61155 / CVE-2025-1055)](https://intel.threadlinqs.com/threat/TL-2026-0819) — HIGH · 2026-06-16
- [DragonForce Ransomware Abuses Microsoft Teams TURN Relays to Hide Backdoor.Turn C2 Traffic](https://intel.threadlinqs.com/threat/TL-2026-2181) — CRITICAL · 2026-06-16

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-06-22.

**Other references**

- [topazevolution.com](https://www.topazevolution.com/en/antifraud/)
- [northwave-cybersecurity.com](https://northwave-cybersecurity.com/vulnerability-notice-topaz-antifraud)

Canonical: https://intel.threadlinqs.com/cve/CVE-2023-52271
Full detection coverage and IOCs for threats exploiting CVE-2023-52271 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp