Vulnerability

CVE-2022-23131

Critical· 9.1KEVCVSS9.1EPSS94%

.rules3/5

Zabbix Frontend Authentication Bypass Vulnerability

Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML.

Threat signal

100/100

Severe

Severity

critical

CVSS

9.1

EPSS

94%

Active

KEV

CISA KEV — actively exploited

1558d overdue

AffectedZabbix — Frontend

Added to KEV

2022-02-22

Federal patch due (BOD 22-01)

2022-03-08

Required action (CISA verbatim)

Apply updates per vendor instructions.

Vendor advisory + references

https://nvd.nist.gov/vuln/detail/CVE-2022-23131

CISA description: “Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML.”

CVSS

v3.1Open in FIRST calculator →

9.1/ 10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactNoneNo availability impact.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

94.0%

probability of exploitation in next 30 days

p100

higher than 100% of all CVEs

3-day trend↑ 0pp

Statistically about to be weaponized — top-tier triage urgency.

Vendor VEX

No VEX statements published for CVE-2022-23131. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: yes
impact: total
mission: support

Lifecycle

2022-02-22Added to CISA KEVransomware: Unknown
2022-02-22Published
2022-03-08Federal patch due (BOD 22-01)
2026-06-12Last modified1 source

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.