CVE Watch12 de ago. de 2026

CVE-2020-3992

VMware ESXi OpenSLP Use-After-Free Vulnerability

CVSS

9.8

Crítica

EPSS

83.0%

p100

KEV

SIM

3 de nov. de 2021

Exploit Today

0-100

Publicado: 20 de out. de 2020 · Última mod.: 12 de ago. de 2026 · CWE-416

EPSS · 30d

83.0%EPSS · 30 dias83.0%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

VMware / ESXi

Vulnerabilidade

VMware ESXi OpenSLP Use-After-Free Vulnerability

Adicionado ao KEV

3 de nov. de 2021

Corrigir até

3 de mai. de 2022

Uso conhecido em ransomware

Sim

Descrição resumida

VMware ESXi OpenSLP contains a use-after-free vulnerability that allows an attacker residing in the management network with access to port 427 to perform remote code execution.

Ação necessária

Apply updates per vendor instructions.

Notas

https://nvd.nist.gov/vuln/detail/CVE-2020-3992

Descrição técnica

OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

Referências oficiais

CVEs relacionados

CVECVSSEPSSKEVRExploitTítuloMod.

CVE-2026-69044—

3.4%

——1In the Samsung GPU driver, improper reference count handling during command submission can lead to memory corruption.21h CVE-2026-69043—

3.4%

——1In the Samsung Exynos GPU driver, improper synchronization during buffer object creation and closing can lead to memory corruption21h CVE-2026-824189.8 CRÍ

38.6%

——12IBM Watson Speech Services Cartridge 4.0.0 through 5.4.0 could allow a remote attacker to execute arbitrary code due to a use-after-free vulnerability.1d CVE-2026-1219635.9 MÉD

23.8%

——7FreeRDP before 3.32.2 contains a use-after-free vulnerability in the asynchronous dynamic rdpsnd channel that allows malicious RDP servers to trigger freed callback access by closing the channel with queued audio PDUs. Attackers can send a training PDU then close the channel so the playback thread reads the freed callback in rdpsnd_virtual_channel_write, crashing the client.5h CVE-2026-1219557.5 ALT

36.2%

——11FreeRDP before 3.32.2 contains a use-after-free vulnerability in Emulate_SCardReleaseContext that frees the emulated SCardContext before its worker thread is cancelled and joined. A malicious server can send ESTABLISHCONTEXT, a long-timeout GETSTATUSCHANGE, then RELEASECONTEXT smartcard IRPs to corrupt heap memory or crash clients using smartcard emulation.5h CVE-2026-1219539.8 CRÍ

46.5%

——14FreeRDP before 3.32.2 has a use-after-free in the client's rdpgfx dynamic virtual channel: a duplicate-name channel with a new ChannelId overwrites the listener's single callback slot, which rdpgfx_on_close frees without clearing. A malicious RDP server can open and close such a channel, then send a PDU on the original channel to crash the client or potentially execute code.5h