CVE-2026-116099: scp\ Buffer Overflow

Description

A flaw has been found in Fusion Creators Studio SCP Containment Breach Multiplayer up to 1.295. This issue affects the function BlitzBanks of the component Skynet++ Virtual Machine. Executing a manipulation can lead to out-of-bounds write. The attack can be executed remotely. The exploit has been published and may be used. Upgrading to version 1.3R is capable of addressing this issue. It is recommended to upgrade the affected component.

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CVSS v3.1 Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0038

Probability of exploitation

0.32%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
fcs-ex	scp\	< 1.295

References

Advisories & Patches

https://steamdb.info/patchnotes/25701366/

Exploits

https://drbloop.dev/blog/one-click-remote-code-execution-in-scp-containment-breach-mutiplayer https://github.com/drbloop2000/SCP-CBM-RCE/tree/main

Other References

https://store.steampowered.com/news/app/1782380/view/670629296167978253 https://vuldb.com/cve/CVE-2026-116099 https://vuldb.com/submit/1001276 https://vuldb.com/vuln/426167 https://vuldb.com/vuln/426167/cti

Frequently Asked Questions

What is CVE-2026-116099? +

A flaw has been found in Fusion Creators Studio SCP Containment Breach Multiplayer up to 1.295. This issue affects the function BlitzBanks of the component Skynet++ Virtual Machine. Executing a manipulation can lead to out-of-bounds write. The attack can be executed remotely. The exploit has been published and may be used. Upgrading to version 1.3R is capable of addressing this issue. It is recommended to upgrade the affected component. It has a CVSS v3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-116099? +

CVE-2026-116099 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0038, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-116099? +

CVE-2026-116099 affects products from fcs-ex, specifically: scp\. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-116099? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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