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CVE-2026-6424— Use-after-free vulnerability in ESET security products for Linux

Quick assessment

Affected
ESET, spol. s.r.o. ESET Endpoint Antivirus for Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ESET endpoint antivirus是斯洛伐克ESET公司的一款终端设备病毒防护软件。 ESET endpoint antivirus存在资源管理错误漏洞，该漏洞源于释放后重用问题，可能导致攻击者触发系统内核崩溃。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.16% · P5

Affected Version Matrix 12

VendorProduct Version RangeStatus
ESET, spol. s.r.o. ESET Endpoint Antivirus for Linux 13.1≤ 13.1.3.0 affected
13.0≤ 13.0.3.0 affected
12.2≤ 12.2.8.0 affected
12.1≤ 12.1.1.0 affected
12.0≤ 12.0.13.0 affected
13.2.3.0 unaffected
ESET, spol. s.r.o. ESET Server Security for Linux 13.1≤ 13.1.116.0 affected
13.0≤ 13.0.34.0 affected
12.2≤ 12.2.72.0 affected
12.1≤ 12.1.406.0 affected
12.0≤ 12.0.287.0 affected
13.2.53.0 unaffected
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I. Basic Information for CVE-2026-6424

Vulnerability Information
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Vulnerability Title
Use-after-free vulnerability in ESET security products for Linux
Source: CVE Program / CVE List V5
Vulnerability Description
Use-after-free vulnerability in ESET Linux products potentially allowed an attacker to trigger kernel panic on the system
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
ESET endpoint antivirus 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ESET endpoint antivirus是斯洛伐克ESET公司的一款终端设备病毒防护软件。 ESET endpoint antivirus存在资源管理错误漏洞，该漏洞源于释放后重用问题，可能导致攻击者触发系统内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ESET, spol. s.r.o. ESET Endpoint Antivirus for Linux 13.1 ~ 13.1.3.0 -
ESET, spol. s.r.o. ESET Server Security for Linux 13.1 ~ 13.1.116.0 -

II. Public POCs for CVE-2026-6424

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III. Intelligence Information for CVE-2026-6424

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Vendor Advisories for CVE-2026-6424 (1)

IV. Related Vulnerabilities

Same vendor: ESET, spol. s.r.o.
Same weakness: CWE-416

V. Comments for CVE-2026-6424

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