Threat Intelligence / CVE / CVE-2025-8088

CVE-2025-8088 — Rarlab Winrar

CISA KEV
CVSS v3.1 8.8 (HIGH) · CVSS v4.0 8.4 · EPSS 7.0% (higher than 91.4% of all scored CVEs) · Priority 9/10 · Published 2025-08-08

As of 2025-10-30, CVE-2025-8088 is a HIGH-severity vulnerability in Rarlab Winrar, CVSS v3.1 8.8, EPSS 7.0% (91.4th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-12), with a US federal remediation deadline of 2025-09-02. Threadlinqs Intelligence links 8 tracked threat campaigns to CVE-2025-8088, most recently “Gamaredon (Primitive Bear / Shuckworm) APT Profile: Russia-Aligned Espionage Against Ukraine and NATO, Now Exploiting CVE-2025-8088 (WinRAR)”.

Last updated: 2025-10-30

What is CVE-2025-8088?

A path traversal vulnerability affecting the Windows version of WinRAR allows the attackers to execute arbitrary code by crafting malicious archive files. This vulnerability was exploited in the wild and was discovered by Anton Cherepanov, Peter Košinár, and Peter Strýček from ESET.

The record classifies CVE-2025-8088 under weakness class CWE-35. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 3 affected-product entries are recorded, across 3 vendors, listed below. The identifier was first published 401 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0 base score
8.4
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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
EPSS (FIRST)
7.0% probability of exploitation in the next 30 days, higher than 91.4% of all scored CVEs
CISA KEV
Listed since 2025-08-12, federal remediation deadline 2025-09-02
Threadlinqs priority
9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published
2025-08-08, last modified 2025-10-30

Is CVE-2025-8088 being exploited?

CISA added CVE-2025-8088 to the Known Exploited Vulnerabilities catalog on 2025-08-12, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-09-02 under BOD 22-01. It currently carries a trending score of 38 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2025-8088

Because CVE-2025-8088 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-09-02. No vendor patch reference has been recorded for CVE-2025-8088 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-2025-8088

8 tracked threats in the Threadlinqs corpus reference CVE-2025-8088, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

Full detection coverage & IOCs for threats exploiting CVE-2025-8088 are available via the Threadlinqs MCP server (Purple tier). View plans →

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