CRITICAL🇵🇱 Wersja polska

CVE-2018-7791

CVSS 9.8v3.1pub. 2018-08-29upd. 2026-05-29

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 unauthorized users to overwrite the original password with their password. If an attacker exploits this vulnerability and overwrite the password, the attacker can upload the original program from the PLC.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Schneider Electric Modicon M221

    HW
    Schneider-Electric
    all versions

  • Schneider Electric Modicon M221 Firmware

    OS
    Schneider-Electric
    < 1.6.2.0
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
Auth Bypass
CWE
References

Related vulnerabilities

CVE-2020-7489CRITICAL9.8PL ✓same product

Podatność Injection w oprogramowaniu Schneider Electric – podstawianie DLL

CVE-2018-7790CRITICAL9.8PL ✓same product

Replay attack na uwierzytelnianie w Schneider Electric Modicon M221

CVE-2020-7566HIGH7.3same product

A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) th...

CVE-2020-7565HIGH7.3same product

A CWE-326: Inadequate Encryption Strength vulnerability exists in Modicon M221 (all references, all versions) ...

CVE-2019-6820HIGH8.2same product

A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification ...