Compact Guardlogix 5370 vulnerabilitiesAnd the versions its exploited flaws hit.

Product1 known exploited0 versions
The short answer

Compact Guardlogix 5370 is made by Rockwellautomation. We track 6 published vulnerabilities listed under that exact name, across 0 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 5 March 2026. Rockwellautomation lists newer releases under their own names, such as Compact Guardlogix 5370 Firmware, so check those pages too.

Check your version

The most recent Compact Guardlogix 5370 flaw added to the known-exploited list is CVE-2021-22681, on 5 March 2026. We keep watching the known-exploited list.

Other names

Is Compact Guardlogix 5370 listed under other names? Yes.

Rockwellautomation also lists Compact Guardlogix 5370 under more specific names, such as Compact Guardlogix 5370 Firmware. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.

Versions

Which versions of Compact Guardlogix 5370 do the exploited flaws hit?

Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.

Known exploited

Which Compact Guardlogix 5370 vulnerabilities are being exploited?

1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 9.8
    CVE-2021-22681CriticalKnown exploited
    Rockwell Multiple Products Insufficient Protected Credentials Vulnerability

    Multiple Rockwell products contain an insufficient protected credentials vulnerability.

    Chance of use64%Known exploited since5 Mar 2026
Exploit likelihood

Which Compact Guardlogix 5370 flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 6.1%

    An attacker could send crafted SMTP packets to cause a denial-of-service condition where the controller enters a major non-recoverable faulted state (MNRF) in CompactLogix 5370 L1, L2, and L3 Controllers, Compact...

    CVSS7.5Published1 May 2019
  2. 5.2%

    An attacker with the ability to modify a user program may change user program code on some ControlLogix, CompactLogix, and GuardLogix Control systems.

    CVSS9.8Published11 Apr 2022
  3. 3.2%

    The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop.

    CVSS5.8Published27 Jul 2022
  4. 2.1%

    A malformed Class 3 common industrial protocol message with a cached connection can cause a denial-of-service condition in Rockwell Automation Logix Controllers, resulting in a major nonrecoverable fault.

    CVSS8.6Published2 Jun 2022
  5. 1.5%

    A vulnerability exists in the Rockwell Automation controllers that allows a malformed CIP request to cause a major non-recoverable fault (MNRF) and a denial-of-service condition (DOS).

    CVSS7.5Published16 Dec 2022
Precursor Intelligence

Running Compact Guardlogix 5370? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

Free plan, no card needed. Nothing to install.

FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 6 published vulnerabilities listed under the name Compact Guardlogix 5370, across 0 versions. The most recent Compact Guardlogix 5370 flaw added to the known-exploited list is CVE-2021-22681, on 5 March 2026.

1 is on the list of flaws known to be exploited. The most recently added is CVE-2021-22681.

Rockwellautomation also lists Compact Guardlogix 5370 under more specific names, such as Compact Guardlogix 5370 Firmware. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.

Create a Precursor Intelligence account and track Compact Guardlogix 5370. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.