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PatchSiren cyber security CVE debrief

CVE-2026-4113 SonicWall CVE debrief

CVE-2026-4113 is an observable response discrepancy vulnerability in SonicWall SMA1000 series appliances that allows remote attackers to enumerate SSL VPN user credentials. The CVE record was published on 2026-04-09T15:16:13.683Z and has not been modified since then. The NVD entry is currently Analyzed. This vulnerability affects SonicWall SMA1000 series appliances with SSL VPN functionality, potentially allowing credential enumeration attacks. Defenders should assess exposure and prioritize verifying the presence of affected appliances.

Vendor
SonicWall
Product
SMA1000
CVSS
HIGH 7.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-09
Original CVE updated
2026-10-26
Advisory published
2026-04-09
Advisory updated
2026-10-26

Who should care

Defenders responsible for SonicWall SMA1000 series appliances, particularly those with SSL VPN functionality, should assess exposure and potential for credential enumeration attacks.

Why it matters

CVE-2026-4113 is a high-severity vulnerability in SonicWall SMA1000 series appliances that allows remote attackers to enumerate SSL VPN user credentials. Defenders should prioritize verifying exposure and assessing potential for credential enumeration attacks.

  • Credential enumeration attacks may be possible
  • Defenders should verify exposure of affected appliances
  • Remediation guidance requires vendor advisory review

Technical summary

The vulnerability is an observable response discrepancy issue in SonicWall SMA1000 series appliances, which allows remote attackers to enumerate SSL VPN user credentials. This issue arises from the appliance's response to authentication requests, potentially leaking information about valid user credentials. Defenders should focus on verifying exposure of affected appliances and assessing the potential for credential enumeration attacks.

Defensive priority

Defenders should prioritize verifying exposure of SonicWall SMA1000 series appliances, particularly those with SSL VPN functionality, and assess the potential for credential enumeration attacks.

Recommended defensive actions

  • Verify exposure of SonicWall SMA1000 series appliances
  • Assess potential for credential enumeration attacks
  • Review and apply vendor advisory

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, but do not specify versions or provide remediation guidance. Vendor advisory is available.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-4113 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-4113

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-4113 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-4113

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.