Is CVE-2026-26157 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2026-26157, but active exploitation has not been confirmed.

Can CVE-2026-26157 be exploited remotely?

No. CVE-2026-26157 requires local access to exploit.

What is the CVSS score of CVE-2026-26157?

CVE-2026-26157 has a CVSS score of 7.0 (HIGH) and an EPSS exploitation probability of 0.01%.

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HIGHPOC

CVE-2026-26157

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. Incomplete path sanitization in its archive extraction utilities allows an attacker to craft malicious archives that when extracted, and under specific conditions, may write to files outside the intended directory. This can lead to arbitrary file overwrite, potentially enabling code execution through the modification of sensitive system files.

NVD Source

Technical Analysis

CVE-2026-26157 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.

A proof-of-concept (PoC) exploit exists for CVE-2026-26157. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.