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CVE-2020-11637

nvd nist
Published: Oct 15, 2020Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

A memory leak in the TFTP service in B&R Automation Runtime versions <N4.26, <N4.34, <F4.45, <E4.53, <D4.63, <A4.73 and prior could allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition.

Affected (7)

Br Automation
1 product
Automation Runtime
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
Br Automation
Automation Runtime
version ≤ 4.10
Automation Runtime
4.20 ≤ version < n4.26
Automation Runtime
4.40 ≤ version < f4.45
Automation Runtime
4.50 ≤ version < e4.53
Automation Runtime
4.60 ≤ version < d4.63
Automation Runtime
4.70 ≤ version < a4.73
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Automation Runtime
4.30 ≤ version < n4.34

Related CWEs

CWE-401
Missing Release of Memory after Effective Lifetime
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

References (2)

Source: cybersecurity@ch.abb.com
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.