Is CVE-2026-39973 actively exploited?

No active exploitation of CVE-2026-39973 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39973 be exploited remotely?

No. CVE-2026-39973 requires local access to exploit.

What is the CVSS score of CVE-2026-39973?

CVE-2026-39973 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-39973

HIGH

CVE-2026-39973

CWE-22Published: April 21, 2026· Updated: Apr 23, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.8th

Official Description

Apktool is a tool for reverse engineering Android APK files. In versions 3.0.0 and 3.0.1, a path traversal vulnerability in `brut/androlib/res/decoder/ResFileDecoder.java` allows a maliciously crafted APK to write arbitrary files to the filesystem during standard decoding (`apktool d`). This is a security regression introduced in commit e10a045 (PR #4041, December 12, 2025), which removed the `BrutIO.sanitizePath()` call that previously prevented path traversal in resource file output paths. An attacker can embed `../` sequences in the `resources.arsc` Type String Pool to escape the output directory and write files to arbitrary locations, including `~/.ssh/config`, `~/.bashrc`, or Windows Startup folders, escalating to RCE. The fix in version 3.0.2 re-introduces `BrutIO.sanitizePath()` in `ResFileDecoder.java` before file write operations.

NVD Source

Technical Analysis

CVE-2026-39973 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), with a CVSS base score of 7.1.