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CERTVDECVELIST:CVE-2021-21002

HistoryJun 23, 2021 - 12:00 a.m.

CVE-2021-21002 Denial of Service in Phoenix Contact FL COMSERVER UNI products

2021-06-2300:00:00

CWE-772

CERTVDE

www.cve.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.7%

JSON

In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.

CNA Affected

[
  {
    "product": "FL COMSERVER",
    "vendor": "Phoenix Contact",
    "versions": [
      {
        "lessThan": "2.40",
        "status": "affected",
        "version": "UNI 232/422/485 (2313452)",
        "versionType": "custom"
      },
      {
        "lessThan": "2.40",
        "status": "affected",
        "version": "UNI 232/422/485-T (2904817)",
        "versionType": "custom"
      }
    ]
  }
]

References

cert.vde.com/en-us/advisories/vde-2021-022

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.7%

JSON

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