# CVE-2026-91946

## Summary

- **CVE ID:** CVE-2026-91946
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-908
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 15, 2026

## Description

FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function addresses transmitted in the PDU, defeating heap ASLR and disclosing the GLib module base address.

## Affected Products

- FreeRDP — FreeRDP (2.0.0)
- FreeRDP — FreeRDP (3.31.0)

## References

- [CNA](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj)
- [CNA](https://github.com/FreeRDP/FreeRDP/commit/483c9388119f06bac420d92053cff9ef94e83bea)
- [CNA](https://www.vulncheck.com/advisories/freerdp-before-3.31.0-information-disclosure-via-rdpgfx-resetgraphics)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._