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

#cve-2026-20133

0 stories this week · 0 this month · 1 in 6 months · mostly security

Stories per day · 30 days

8 stories, newest first · one card per story

Help Net SecurityJun 16, 2026high

Cisco discloses second exploited SD-WAN vulnerability in two weeks (CVE-2026-20262)

Exploited4 min readcve-2026-20128 cve-2026-20133

2

CyberScoopMay 15, 2026critical

Cisco zero-day under ongoing attack by persistent threat group

Exploited5 min readcve-2026-20122 cve-2026-20127

2

The Hacker NewsMay 15, 2026critical

CISA Adds Cisco SD-WAN CVE-2026

Exploited3 min readadvisory cve-2026-20122

1

Cisco TalosMay 14, 2026high

Ongoing exploitation of Cisco Catalyst SD

Exploited12 min readcve-2026-20122 cve-2026-20127

8

Help Net SecurityApr 26, 2026high

Week in review: Claude Mythos finds 271 Firefox flaws, Vercel breach

Exploited15 min readcve-2026-20133 cve-2026-21876

Security AffairsApr 21, 2026critical

U.S. CISA adds Cisco Catalyst, Kentico Xperience, PaperCut NG/MF, Synacor ZCS, Quest KACE SMA, and JetBrains TeamCity flaws to its Known Exploited Vulnerabilities catalog

Exploited3 min readcve-2023-27351 cve-2024-27199

1

Help Net SecurityApr 21, 2026critical

CISA flags another Cisco Catalyst SD-WAN Manager bug as exploited (CVE-2026-20133)

Exploitedcve-2023-27351 cve-2024-27199

2

The Hacker NewsMar 9, 2026critical

Cisco Confirms Active Exploitation of Two Catalyst SD

Exploited3 min readcve-2026-20122 cve-2026-20128

3