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Vulnerability · Published Jul 11, 2023 · Assigned by siemens

CVE-2023-35920

High 7.5

In plain English

A high-severity uncontrolled resource consumption in SIMATIC MV540 H from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 41.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC MV540 H All versions < V3.3.4
Siemens SIMATIC MV540 S All versions < V3.3.4
Siemens SIMATIC MV550 H All versions < V3.3.4
Siemens SIMATIC MV550 S All versions < V3.3.4
Siemens SIMATIC MV560 U All versions < V3.3.4
Siemens SIMATIC MV560 X All versions < V3.3.4

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

References