NewA calmer, faster ZeroHour — security assessments on articles, story timelines and search from any page.

#cve-2021-20039

0 stories this week · 0 this month · 7 in 6 months

Stories per day · 30 days

7 stories, newest first · one card per story

Help Net SecurityAug 5, 2025critical

SonicWall SMA devices persistently infected with stealthy OVERSTEP backdoor and rootkit

6 min readcve-2021-20035 cve-2021-20039

1

The Hacker NewsJul 26, 2025critical

UNC6148 Backdoors Fully-Patched SonicWall SMA 100 Series Devices with OVERSTEP Rootkit

5 min readcve-2021-20035 cve-2021-20038

1

CyberScoopJul 16, 2025critical

SonicWall customers hit by fresh, ongoing attacks targeting fully patched SMA 100 devices

Exploited5 min readcve-2021-20038 cve-2024-38475

1

The RecordJul 16, 2025critical

Google spots tailored backdoor malware aimed at SonicWall appliances

3 min readcve-2024-38475 cve-2021-20038

2

Ars Technica · SecurityJul 15, 2025critical

Google finds custom backdoor being installed on SonicWall network devices

Exploited2 min readcve-2021-20038 cve-2024-38475

1

The Hacker NewsDec 9, 2021critical

SonicWall Urges Customers to Immediately Patch Critical SMA 100 Flaws

Exploited2 min readcve-2021-20038 cve-2021-20039

2

Security AffairsDec 8, 2021critical

SonicWall strongly urges customers to apply patches to SMA 100 devices

2 min readcve-2021-20038 cve-2021-20045

1