01 Record
CVE-2018-7791
A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows
CriticalPUBLISHEDCNA: schneider
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 1.89% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 79.4% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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
- 2018-08-29 21:00Z8 YR AGO
- Last updated
- 2026-05-29 13:59Z5 MO AGO
- Reserved
- 2018-03-08
- Assigning CNA
- schneider
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- c04efc230416e28ff3a95693667fa21f6e906aac160ad26635590d72919bfb0a
05 Affected products
VendorProductVersionsPlatforms
Schneider Electric SEModicon M221, all references, all versions prior to firmware V1.6.2.0Modicon M221, all references, all versions prior to firmware V1.6.2.0—
06 References
- www.securityfocus.com105182http://www.securityfocus.com/bid/105182
- www.schneider-electric.comhttps://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/