Vulnerability · Published Dec 22, 2021 · Assigned by talos
CVE-2021-21911
High 8.8
In plain English
A high-severity incorrect default permissions in Advantech. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.0)8.8High
Exploit odds (30 days)0.3%top 74.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A privilege escalation vulnerability exists in the Windows version of installation for Advantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021). A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.
Affected products (as reported)
Weakness: CWE-276 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1360 x_refsource_MISC