CVE-2021-33023
CRITICALCVSS 9.8/10EPSS 2.21%
Last modified
CVE-2021-33023 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.. EPSS estimates a 2.21% chance of exploitation in the next 30 days.
Description
Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Advantech | Webaccess | <= 9.0.2 |
References
- https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02Mitigation, Third Party Advisory, US Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02Mitigation, Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33023?
Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.
How severe is CVE-2021-33023?
CVE-2021-33023 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33023?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-33023?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST