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CVE-2026-1199· NVD / CVE Program· CNA Zabbix

API and Frontend login lockout race condition

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.

MediumCVSS 6.9 · v4.0—No exploit Fix available
Published
Aug 18, 2026
Updated
Sep 8, 2026
EPSS
0.2% · 5th percentile
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Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Zabbix
6.9
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
zabbixzabbix

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • zabbix zabbix6.0.0 and later · before 6.0.47
  • zabbix zabbix7.0.0 and later · before 7.0.28
  • zabbix zabbix7.4.0 and later · before 7.4.12

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Zabbix). Independent of NVD's CPE analysis and usually ahead of it.

  • Zabbix Zabbix

    • 6.0.0 and later · up to and including 6.0.46affected · gitfixed in 6.0.47
    • 7.0.0 and later · up to and including 7.0.27affected · gitfixed in 7.0.28
    • 7.4.0 and later · up to and including 7.4.11affected · gitfixed in 7.4.12

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12zabbixall versions—
Debian:14zabbixbefore 1:7.0.29+dfsg-11:7.0.29+dfsg-1

Same product

zabbix: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-23131Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAMLKEV
    98Now
  • CVE-2022-23134Possible view of the setup pages by unauthenticated users if config file already existsKEV
    80Now
  • CVE-2016-10134SQL injection vulnerability in Zabbix before 2.2.14 and 3.0 before 3.0.4 allows remote attackers to execute arbitrary SQL commands via the t
    64This week
  • CVE-2024-42327SQL injection in user.get API
    63This week
  • CVE-2013-5743Multiple SQL injection vulnerabilities in Zabbix 1.8.x before 1.8.18rc1, 2.0.x before 2.0.9rc1, and 2.1.x before 2.1.7.
    63This week
  • CVE-2024-22120Time Based SQL Injection in Zabbix Server Audit Log
    58Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Zabbix Zabbix6.0.47Vendor (CNA)
Zabbix Zabbix7.0.28Vendor (CNA)
Zabbix Zabbix7.4.12Vendor (CNA)
debian:zabbix1:7.0.29+dfsg-1 · Debian:14Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records