CVE-2025-61037: SevenCs ORCA G2 · Time-of-check Time-of-use (TOCTOU) Race Condition
Source CVE Database V5
Not known to be exploited · CVSS 7.0 High.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 31 Dec 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 26 Oct 2026.
What to do
AI-suggested
Given the absence of official patches, European organizations should implement immediate compensating controls. First, restrict access to systems running SevenCs ORCA G2 2.0.1.35 to trusted users only and enforce the principle of least privilege to limit standard user capabilities. Monitor and audit the creation of NTFS reparse points and directory modifications by the regService process or related services. Employ application whitelisting and endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. Disable or tightly control UAC prompts to prevent unauthorized elevation without explicit administrator approval. Network segmentation should isolate critical systems running this software to reduce lateral movement risk. Organizations should also engage with SevenCs for timely patch releases and consider temporary removal or replacement of affected software where feasible. Regularly update incident response plans to include scenarios involving local privilege escalation attacks.
Description
A local privilege escalation vulnerability exists in SevenCs ORCA G2 2.0.1.35 (EC2007 Kernel v5.22). The flaw is a Time-of-Check Time-of-Use (TOCTOU) race condition in the license management logic. The regService process, which runs with SYSTEM privileges, creates a fixed directory and writes files without verifying whether the path is an NTFS reparse point. By exploiting this race condition, an attacker can replace the target directory with a junction pointing to a user-controlled path. This causes the SYSTEM-level process to drop binaries in a location fully controlled by the attacker, allowing arbitrary code execution with SYSTEM privileges. The vulnerability can be exploited by any standard user with only a single UAC confirmation, making it highly practical and dangerous in real-world environments.