CVE-2022-22832: An issue was discovered in Servisnet Tessa 0.0.2

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-22832 is a critical-severity flaw (CVSS 9.8) affecting tessa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Servisnet Tessa 0.0.2. Authorization data is available via an unauthenticated /data-service/users/ request.

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	14.1% (top 3%)
CISA exploited list	No
Weakness	CWE-639
Published	2022-02-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: servisnet

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

Am I affected?

Timeline

2022-02-06 21:15 UTCPublished CVE record published
2026-06-17 04:29 UTCUpdated Record last modified

servisnet tessa DOWNGRADE

Affected: 0.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.0.2 (Debian / Ubuntu)

apt-cache madison tessa sudo apt install tessa=<VERSION_BEFORE_0.0.2> sudo apt-mark hold tessa

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tessa sudo dnf downgrade tessa-<VERSION_BEFORE_0.0.2> sudo dnf versionlock add tessa

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Servisnet Tessa - MQTT Credentials Dump (Unauthenticated) (Metasploit)

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-2022-22832?

tessa: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-22832 being exploited?

CVE-2022-22832 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-2022-22832 affect?

CVE-2022-22832 affects tessa. Severity is critical (CVSS 9.8). An issue was discovered in Servisnet Tessa 0.0.2. Authorization data is available via an unauthenticated /data-service/users/ request.

How urgent is CVE-2022-22832?

Priority 68/100. Critical severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-22833 HIGH 7.5 DOWNGRADE An issue was discovered in Servisnet Tessa 0.0.2
CVE-2022-22831 CRITICAL 9.8 DOWNGRADE An issue was discovered in Servisnet Tessa 0.0.2

References

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