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CVE-2021-31345

No known exploitation. EPSS puts it in the 76th percentile. Fixed versions are out.

CVSS 3.17.5HighEPSS percentile76th1.6% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix4 products2 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU, CSAF

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Siemens Capital Embedded AR Classic R20-11Affected: < V2303Upgrade to: V2303Stated by: CVE record
  • Siemens PLUSCONTROL 1st GenAffected: All versionsUpgrade to: not statedStated by: CVE record
  • Siemens Nucleus Readystart V3Affected: < 2014.12Upgrade to: 2014.12Stated by: NVD
  • Siemens AG NUCLEUS READYSTART v4Affected: до 4.1.1Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS76th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.6% chance of exploitation activity in the next 30 days, which ranks it in the 76th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

4 events over 1108 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Publishedweakness classified

Affected products

And 20 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 7.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

Sources

References in the record

And 33 more references. See all after sign-in

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