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TI-2026-24782 Aliases CVE-2026-32253

Sunshine: Authentication bypass via improper client certificate validation

Priority HIGH 82CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Spoofing
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287 and CWE-295.

Summary

Sunshine is a self-hosted game stream host for Moonlight. In versions prior to 2026.516.143833, the client-certificate authentication can be bypassed because of how OpenSSL verification results are handled. In src/crypto.cpp, the custom verify callback treats X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY, X509_V_ERR_CERT_NOT_YET_VALID, and X509_V_ERR_CERT_HAS_EXPIRED as success. This can allow an untrusted certificate to pass authentication and access protected HTTPS endpoints. This issue has been fixed in version 2026.516.143833.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Sunshine (LizardByte): 2026.516.143833

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LizardByteSunshinebefore 2026.516.1438332026.516.143833Patch availableCNA
  • Sunshine VendorLizardByte Affected before 2026.516.143833 Fixed in 2026.516.143833 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:lizardbyte:sunshine:*:*:*:*:*:*:*:*before 2026.516.143833VulnerableLizardByte
  • cpe:2.3:a:lizardbyte:sunshine:*:*:*:*:*:*:*:* Versions before 2026.516.143833 Vulnerable ·LizardByte

Remediation

  • Fix · CNA Sunshine (LizardByte) Fixed in 2026.516.143833

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32253

References

Exploit 1

Other 1

  • TI-2025-33924 SunshineService Has Unquoted Service Path That Allows Local SYSTEM Code Execution CVSS 3.1HIGH 7.0
  • TI-2025-33088 Sunshine application-wide CSRF in the UI leads to command injection as Administrator CVSS 3.1CRITICAL 9.7
  • TI-2024-34644 Sunshine improperly enforces pairing protocol request order CVSS 4.0HIGH 7.7
  • TI-2025-09364 A local privilege escalation vulnerability exists in LizardBytes' Sunshine for Windows CVSS 3.1HIGH 7.8
  • TI-2025-09363 LizardBytes Sunshine for Windows contains a DLL search-order hijacking vulnerability CVSS 3.1HIGH 7.8
  • TI-2024-20597 Sunshine vulnerable to remote unauthenticated arbitrary file read CVSS 3.1HIGH 7.3
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences