PT-2026-29141 · Winpr+4 · Winpr+4

Prahal · Publicado 2026-01-01 · Atualizado 2026-06-15 · CVE-2026-33995

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Média

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.24.2

Description FreeRDP is a free implementation of the Remote Desktop Protocol. A double-free issue exists in the kerberos AcceptSecurityContext() and kerberos InitializeSecurityContextA() functions (WinPR, winpr/libwinpr/sspi/Kerberos/kerberos.c). This can lead to a crash in FreeRDP clients on systems configured with Kerberos and/or Kerberos U2U, such as Samba AD members or systems using krb5 for NFS. The crash occurs during Network Level Authentication (NLA) connection teardown and requires a failed authentication attempt.

Recommendations Upgrade to FreeRDP version 3.24.2 or later.

Exploit

Correção

DoS

Double Free

Enumeração de Fraquezas

CWE-415

Identificadores relacionados

BDU:2026-04674

CVE-2026-33995

GHSA-MV25-F4P2-5MXX

OPENSUSE-SU-2026:10633-1

OPENSUSE-SU-2026:20657-1

SUSE-SU-2026:21436-1

Produtos afetados

Freerdp

Red Os

Samba

Winpr

Krb5

Referências · 25

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33995.json · Exploit
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mv25-f4p2-5mxx · Aviso do Fabricante
• https://github.com/FreeRDP/FreeRDP/commit/8078b8af1359055972e4fb2f509f543b69169391 · Correção
• https://osv.dev/vulnerability/CVE-2026-33995 · Aviso do Fabricante
• https://bdu.fstec.ru/vul/2026-04674 · Nota de Segurança
• https://suse.com/security/cve/CVE-2026-33986 · Nota
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-33995 · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2026-33995 · Aviso do Fabricante
• https://cve.org/CVERecord?id=CVE-2026-33995 · Nota de Segurança
• https://twitter.com/CVEnew/status/2038916067230372121 · Publicação no Twitter
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/uyazvimost-freerdp3-cve-2026-33995-7.3 · Nota
• https://suse.com/security/cve/CVE-2026-33983 · Nota
• https://suse.com/security/cve/CVE-2026-33984 · Nota
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti-red-os-8-0/uyazvimost-freerdp3-cve-2026-33995-8.0 · Nota
• https://suse.com/security/cve/CVE-2026-33987 · Nota