Is CVE-2026-26158 actively exploited?

No active exploitation of CVE-2026-26158 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-26158 be exploited remotely?

No. CVE-2026-26158 requires local access to exploit.

What is the CVSS score of CVE-2026-26158?

CVE-2026-26158 has a CVSS score of 7.0 (HIGH) and an EPSS exploitation probability of 0.01%.

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HIGH

CVE-2026-26158

CWE-73Published: February 11, 2026· Updated: Feb 12, 2026

7.0

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.2th

Official Description

A flaw was found in BusyBox. This vulnerability allows an attacker to modify files outside of the intended extraction directory by crafting a malicious tar archive containing unvalidated hardlink or symlink entries. If the tar archive is extracted with elevated privileges, this flaw can lead to privilege escalation, enabling an attacker to gain unauthorized access to critical system files.

NVD Source

Technical Analysis

CVE-2026-26158 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.