CVE-2022-34837: Storing Passwords in a Recoverable Format vulnerability in ABB Zenon 8.20 allows an attacker who successfully

Q: How do I fix CVE-2022-34837?

zenon: upgrade to newer than 8.20. Exact commands for each OS are on this page.

Q: Is CVE-2022-34837 being exploited?

CVE-2022-34837 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-34837 affect?

CVE-2022-34837 affects zenon. Severity is medium (CVSS 6.2). Storing Passwords in a Recoverable Format vulnerability in ABB Zenon 8.20 allows an attacker who successfully exploit the vulnerability may add more network clients that may monitor various activities of the Zenon.

Q: How urgent is CVE-2022-34837?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 6.2UPGRADE

CVE-2022-34837 is a medium-severity flaw (CVSS 6.2) affecting zenon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Storing Passwords in a Recoverable Format vulnerability in ABB Zenon 8.20 allows an attacker who successfully exploit the vulnerability may add more network clients that may monitor various activities of the Zenon.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-257, CWE-522
Published	2022-08-24
Last modified	2026-06-17

Publisher (CNA): Asea Brown Boveri Ltd. (ABB) · Vendor: abb

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-24 16:15 UTCPublished CVE record published
2026-06-17 04:51 UTCUpdated Record last modified

abb zenon UPGRADE

Affected: <= 8.20

Fixed in: newer than 8.20

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy zenon || rpm -q zenon || zenon --version

2. UPGRADE to newer than 8.20 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zenon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zenon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-34837?

zenon: upgrade to newer than 8.20. Exact commands for each OS are on this page.

Is CVE-2022-34837 being exploited?

CVE-2022-34837 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-34837 affect?

CVE-2022-34837 affects zenon. Severity is medium (CVSS 6.2). Storing Passwords in a Recoverable Format vulnerability in ABB Zenon 8.20 allows an attacker who successfully exploit the vulnerability may add more network clients that may monitor various activities of the Zenon.

How urgent is CVE-2022-34837?

Priority 23/100. No elevated risk signals yet.

Software pages

ABB vulnerabilities

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References

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