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CVE-2026-13165

8.6
High
EPSS 0.71%Patch availableJun 29, 2026

RCE via crafted native library in SzafirHost archive

common questions

Is CVE-2026-13165 being exploited?

Not confirmed. CVE-2026-13165 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.71% probability of exploitation in the next 30 days.

How severe is CVE-2026-13165?

CVE-2026-13165 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-13165?

Yes. A fix has been recorded for CVE-2026-13165. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-13165 affect?

CVE-2026-13165 affects SzafirHost. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-13165?

Upgrade to 1.2.2+; enforce strict archive hash checks

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
SzafirHost
impact

Remote code execution by delivering a crafted archive; injected native library is written to temp dir without hash verification after being marked as signed.

action required

Patch when possible

affected versions
Krajowa Izba Rozliczeniowa SzafirHost
  • affected< 1.2.2

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
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