MobSF Vulnerable to Arbitrary File Write (AR-Slip) via Absolute Path in .a Extraction

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

6.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

EPSS

• CVE-2025-58162: 0.59% estimated exploitation activity in the next 30 days; percentile 48.35 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The vulnerability allows any user to overwrite any files available under the account privileges of the running process. Details As part of static analysis, iOS MobSF supports loading and parsing statically linked libraries .a. When parsing such archives, the code extracts the embedded objects to the file system in the working directory of the analysis. The problem is that the current implementation does not prohibit absolute file names inside .a. If an archive item has a name like /abs/path/to/file, the resulting path is constructed as Path(dst) /name; for absolute paths, this leads to a complete substitution of the destination directory: writing occurs directly to the specified absolute directory. the path (outside the working directory). Thus, an authenticated user who uploaded a specially prepared .a, can write arbitrary files to any directory writable by the user of the MobSF process (for example, /tmp, neighboring directories inside ~/.MobSF, etc.). The key reason is…

Published by the source

2 Sep 2025, 17:12 UTC

Last modified by the source

7 Jul 2026, 17:56 UTC

Source last checked

26 Oct 2026, 13:35 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-9gh8-9r95-3fc3

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-9gh8-9r95-3fc3

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# Patch Next advisory brief: CVE-2025-58162

Advisory: MobSF Vulnerable to Arbitrary File Write (AR-Slip) via Absolute Path in .a Extraction
IDs: CVE-2025-58162, GHSA-9gh8-9r95-3fc3
Record: https://patchnext.com/advisories/cve-2025-58162 (revision 2, source checked 26 Oct 2026, 13:35 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: mobsf 4.4.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI mobsf: affected <= 4.4.0; fixed in 4.4.1

## Suggested inspection (read-only)
- `python -m pip show mobsf`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on mobsf.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-9gh8-9r95-3fc3 (OSV record GHSA-9gh8-9r95-3fc3 lists affected ranges: PyPI mobsf >=0 <4.4.1 (fixed))
- Verified: https://github.com/advisories/GHSA-9gh8-9r95-3fc3 (GitHub-reviewed advisory GHSA-9gh8-9r95-3fc3 lists affected ranges: PyPI mobsf >=0 <=4.4.0)

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