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CVE-2026-73242

Freerdp buffer overflow

9.1 CRITICALPublic exploitEPSS 0.40%
  1. Published11 Aug 2026

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP's winpr/libwinpr/sspi/Kerberos/kerberos.c kerberos_DecryptMessage function fails to bound the peer-controlled GSS Wrap-token EC field before using it with RRC in IOV pointer offsets, allowing a malicious RDP peer to trigger out-of-bounds reads and in-place writes during CredSSP/NLA Kerberos decryption. This issue is fixed in version 3.30.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Freerdp< 3.30.0

Remediation

Fixed in
Freerdp≥ 3.30.0

References

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Frequently asked

Is CVE-2026-73242 being actively exploited?

CVE-2026-73242 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.40%.

How severe is CVE-2026-73242?

CVE-2026-73242 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.40% probability of exploitation.

Which products are affected by CVE-2026-73242?

Affected products include Freerdp.

How do I fix CVE-2026-73242?

Upgrade affected software to a fixed version, for example Freerdp 3.30.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-73242 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.