CVE-2026-85456

MOOS-IvP through 24.8.1 alog Splitting Path Traversal on Windows

Published Sep 3, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Description

MOOS-IvP through 24.8.1 fails to properly validate variable names extracted from alog files in the SplitHandler, allowing attackers to write files outside the split directory. Attackers can supply crafted alog files with backslash sequences in variable names to escape the output directory and append to arbitrary files on Windows systems.

Analysis

Technical impact

A flaw in MOOS‑IvP 24.8.1 permits insufficient validation of variable names extracted from alog files. When a crafted alog file contains backslash sequences, the SplitHandler will create or overwrite files beyond its configured split directory. The vulnerability therefore allows modification or creation of arbitrary files, potentially compromising system integrity.

Affected Systems

The affected product is MOOS‑IvP version 24.8.1. All installations of this version on Windows platforms that use the SplitHandler to parse alog files are vulnerable.

Risk and Exploitability

The CVSS score of 6.8 indicates moderate severity. The EPSS score is not available, indicating insufficient data on exploitation probability, and the vulnerability is not listed in KEV. The likely attack vector is an attacker supplying crafted alog files—either locally or via an upload mechanism that the application accepts—so that the SplitHandler will process them. Successful exploitation would enable an attacker to write or modify arbitrary files on the affected host, threatening the integrity of the system.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

moos-ivp

unaffected

Version	Status	Constraints
`0`	affected	≤ 24.8.1

Configuration 1 [-]

cpe:2.3:a:mit:moos-ivp:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Moos-ivp

Version	Status	Scheme	Platform
`[0,24.8.1]`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Apply a vendor‑supplied update that validates variable names in the SplitHandler (a later release than 24.8.1 is required).
If an update is not yet available, block or remove the ability of unauthorized users to supply alog files to the system, ensuring only trusted parties can create or modify them.
Configure the application to write split files only to a dedicated, non‑modifiable directory or wrap the write operation in strict validation that rejects any path traversal attempts.

Generated by OpenCVE AI on September 3, 2026 at 23:35 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.229% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/moos-ivp/moos-ivp
https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_logutils/SplitHandler.cpp#L189
https://github.com/moos-ivp/moos-ivp/commit/6f0619e905b325d6b88f76425673045c6e4f6f94
https://github.com/moos-ivp/moos-ivp/pull/137
https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-alog-splitting-path-traversal-on-windows

History

Oct 14, 2026 11:45 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Mit Mit moos-ivp
CPEs		cpe:2.3:a:mit:moos-ivp::::::::
Vendors & Products		Mit Mit moos-ivp

Sep 4, 2026 3:45 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Moos-ivp Moos-ivp moos-ivp
Vendors & Products		Moos-ivp Moos-ivp moos-ivp

Sep 4, 2026 2:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 3, 2026 10:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		MOOS-IvP through 24.8.1 fails to properly validate variable names extracted from alog files in the SplitHandler, allowing attackers to write files outside the split directory. Attackers can supply crafted alog files with backslash sequences in variable names to escape the output directory and append to arbitrary files on Windows systems.
Title		MOOS-IvP through 24.8.1 alog Splitting Path Traversal on Windows
Weaknesses		CWE-22
References		https://github.com/moos-ivp/moos-ivp https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_logutils/SplitHandler.cpp#L189 https://github.com/moos-ivp/moos-ivp/commit/6f0619e905b325d6b88f76425673045c6e4f6f94 https://github.com/moos-ivp/moos-ivp/pull/137 https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-alog-splitting-path-traversal-on-windows
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}` cvssV4_0 `{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}`