01 Record
CVE-2021-33000
Parsing a maliciously crafted project file may cause a heap-based buffer overflow, which may allow an attacker to perform arbitrary code execution. User interaction is required on the WebAccess HMI
UnratedPUBLISHEDCNA: icscert
CNA base scoreUnratedNo CNA CVSS vector
02 Description
Parsing a maliciously crafted project file may cause a heap-based buffer overflow, which may allow an attacker to perform arbitrary code execution. User interaction is required on the WebAccess HMI
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.04% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 63.7% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-06-24 17:30Z5 YR AGO
- Last updated
- 2024-08-03 23:42Z2 YR AGO
- Reserved
- 2021-05-13
- Assigning CNA
- icscert
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 761e7024434b7c3c21a56a6c0dda1f626e49bfe6072a6bf2efa80cfc561debc3
05 Affected products
VendorProductVersionsPlatforms
06 References
- us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-173-01