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CVE Record

CVE-2026-32983: SSL/TLS Renegotiation DoS in Wazuh Manager authd service

Wazuh Manager authd service in wazuh-manager packages through version 4.7.3 contains an improper restriction of client-initiated SSL/TLS renegotiation vulnerability that allows remote attackers to cause a denial of service by sending excessive renegotiation requests. Attackers can exploit the lack of renegotiation limits to consume CPU resources and render the authd service unavailable.

MediumCVSS 6.9Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A remote attacker could overload the Wazuh Manager authd service by abusing repeated SSL/TLS renegotiation. This can make agent enrollment or authentication unavailable, but the provided sources do not indicate data theft or system takeover.

Executive priority

Treat as a moderate availability risk for Wazuh operations. Prioritize exposed or internet-reachable managers first, because no authentication is required and disruption could affect monitoring operations.

Technical view

CVE-2026-32983 affects Wazuh Manager authd in wazuh-manager packages through 4.7.3. The service does not sufficiently restrict client-initiated SSL/TLS renegotiation, allowing unauthenticated network attackers to consume CPU and cause authd denial of service.

Likely exposure

Organizations exposing Wazuh Manager authd to untrusted networks have the clearest exposure. Internal-only deployments still face risk from compromised hosts or malicious insiders able to reach authd.

Exploitation context

The CVSS 4.0 vector is network, low complexity, no privileges, and no user interaction. The source bundle says KEV is false and provides no evidence of active exploitation.

Researcher notes

Evidence supports SSL/TLS renegotiation-driven DoS against authd, not confidentiality or integrity impact. The provided bundle does not include exploit-in-the-wild confirmation or detailed fixed-version text beyond affected-version statements.

Mitigation direction

  • Review the Wazuh GHSA and apply vendor-recommended updates or configuration changes.
  • Verify wazuh-manager is not within the affected version range.
  • Restrict authd network access to trusted management or enrollment sources.
  • Monitor authd CPU use, availability, and connection spikes.
  • Prepare operational workarounds for agent enrollment disruption.

Validation and detection

  • Inventory all Wazuh Manager nodes and record wazuh-manager versions.
  • Confirm whether authd is reachable from untrusted networks.
  • Check change records against the Wazuh vendor advisory.
  • Review service telemetry for CPU exhaustion or authd availability events.
  • Validate firewall or access-control rules around authd exposure.
Prepared
Confidence
high
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-276: Exact CWE lookup

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Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-32983 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.9 (4.0)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
3Timeline events
1ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.9CVSS 4.0MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:LVulnCheck
5.8CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L3.91.4VulnCheck

Vulnerability scoring details

Base CVSS 4.0 score

6.9Medium
CVSS 4.0 vector shape for CVE-2026-32983Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Wazuhwazuh-managerwazuh-manager, 0, 4.8.0unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-276 · source CWE mapping

Incorrect Default Permissions

Incorrect Default Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.