CVE-2025-9801VulnerabilityPublished 1 Sep 2025

CVE-2025-9801: SimStudioAI sim · Path Traversal

Affects SimStudioAI simSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

European organizations should immediately verify if their SimStudioAI 'sim' deployments include versions up to the specified commit ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. Due to the rolling release model, organizations should consult SimStudioAI's official channels or repositories to identify the patch commit 45372aece5e05e04b417442417416a52e90ba174 and update to the patched version without delay. Additionally, organizations should implement strict input validation and sanitization on all file path parameters to prevent path traversal attempts. Network-level controls such as web application firewalls (WAFs) can be configured to detect and block suspicious path traversal patterns in HTTP requests. Restricting access to the SimStudioAI service to trusted internal networks or VPNs can reduce exposure. Monitoring and logging access to sensitive files and unusual file access patterns can help detect exploitation attempts early. Organizations should also conduct internal audits of file permissions to ensure that even if traversal occurs, sensitive files are protected by appropriate OS-level access controls. Finally, incident response plans should be updated to include this vulnerability, enabling rapid containment and remediation if exploitation is detected.

Description

A security vulnerability has been detected in SimStudioAI sim up to ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. This affects an unknown part. The manipulation of the argument filePath leads to path traversal. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The identifier of the patch is 45372aece5e05e04b417442417416a52e90ba174. To fix this issue, it is recommended to deploy a patch.

Impact

For European organizations using SimStudioAI 'sim', this vulnerability poses a moderate risk. Unauthorized file access could lead to leakage of sensitive business data, intellectual property, or personal data protected under GDPR, potentially resulting in regulatory penalties and reputational damage. Organizations in sectors such as finance, healthcare, and critical infrastructure that rely on SimStudioAI products for simulation or AI-driven workflows may face increased risk if attackers access confidential files. The remote exploitability without authentication increases the attack surface, especially for internet-facing deployments. While no active exploitation is currently reported, the public disclosure means threat actors could develop exploits rapidly. The medium severity rating suggests that while the vulnerability is not critical, it should be addressed promptly to prevent escalation or chained attacks. The impact on confidentiality is the primary concern, with limited direct effects on integrity or availability. European organizations must consider the compliance implications of unauthorized data access and the potential for lateral movement within their networks if attackers gain footholds through this vulnerability.

Summary

CVE-2025-9801 is a path traversal vulnerability identified in the SimStudioAI 'sim' product, specifically affecting versions up to commit ed9b9ad83f1a7c61f4392787fb51837d34eeb0af. The vulnerability arises from improper validation or sanitization of the 'filePath' argument, allowing an attacker to manipulate this parameter to traverse directories outside the intended file system scope. This can lead to unauthorized access to files and directories on the server hosting the application. The vulnerability is remotely exploitable without requiring user interaction, and no privileges beyond low-level privileges are necessary to exploit it. The CVSS 4.0 base score is 5.3 (medium severity), reflecting a network attack vector with low attack complexity, no user interaction, and limited impact on confidentiality, integrity, and availability. The vulnerability has been publicly disclosed, and a patch identified by commit 45372aece5e05e04b417442417416a52e90ba174 is available to remediate the issue. However, due to the rolling release model of SimStudioAI, specific version numbers for patched releases are not provided. No known exploits are currently observed in the wild, but the public disclosure increases the risk of exploitation attempts. The vulnerability does not require authentication, making it accessible to unauthenticated remote attackers who can send crafted requests to the vulnerable component. The impact primarily concerns unauthorized file access, which could lead to information disclosure or potentially further compromise depending on the files accessed. The vulnerability does not appear to directly affect system availability or integrity beyond the scope of file access. Given the nature of the flaw, attackers could leverage it to read sensitive configuration files, credentials, or other critical data stored on the server, which could facilitate subsequent attacks.

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 1 Sep 2025, 23:32 UTC

Technical details

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