CVE-2021-25677
Published Apr 22, 2021
Last updated a year ago
Overview
- Description
- A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
- Source
- productcert@siemens.com
- NVD status
- Modified
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.3
- Impact score
- 1.4
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:P/A:N
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:siemens:simotics_connect_400:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "48BFF9EF-D1C1-4107-8D1E-51315C03FFF0"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:siemens:simotics_connect_400_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "374052C8-5A98-4404-B029-72D2404A7036",
"versionStartIncluding": "0.5.0.0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7A987CFB-4A41-4F82-8C7F-31DE8F0650DE"
},
{
"criteria": "cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2F36C9F-E4F4-4678-B82D-361F4818B66C",
"versionEndExcluding": "2017.02.4"
},
{
"criteria": "cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B35FDE44-BE25-431D-B2EE-195ACC5A606C",
"versionEndExcluding": "4.1.0"
},
{
"criteria": "cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "53A38C64-612A-4BC5-83D5-D3FA1C90E0F7"
}
],
"operator": "OR"
}
]
}
]