Weekly report · exploited in the wild
Newly exploited vulnerabilities: week of 11 to 17 May 2026 (week 20)
Final report, published . It does not change.
In the week of 11 to 17 May 2026, 2 vulnerabilities were newly recorded as exploited in the wild, 2 of them critical. The technology hit most was Cisco Catalyst Sd-Wan (1), followed by Cisco Catalyst SD-WAN Controller (1) and Cisco Catalyst SD-WAN Controller (vSmart) (1).
- Newly exploited
- 2
- Critical
- 2
- Technologies hit
- 9
Newly exploited this week
- CVE-2026-42897: Microsoft Exchange Server cross-site scripting in Outlook Web AccesscriticalCVSS 8.1Exploited since Published Microsoft Exchange Server, Microsoft
- CVE-2026-20182: Cisco Catalyst SD-WAN authentication bypass in peering mechanismcriticalCVSS 10Exploited since Published Cisco Catalyst Sd-Wan, Cisco Catalyst SD-WAN Controller, Cisco Catalyst SD-WAN Controller (vSmart)
Technologies hit most
- 1.Cisco Catalyst Sd-Wan1 vulnerability
- 2.Cisco Catalyst SD-WAN Controller1 vulnerability
- 3.Cisco Catalyst SD-WAN Controller (vSmart)1 vulnerability
- 4.Cisco Catalyst SD-WAN Manager1 vulnerability
- 5.Cisco Catalyst SD-WAN Manager (vManage)1 vulnerability
- 6.Cisco Catalyst SD-WAN Validator1 vulnerability
- 7.Cisco Catalyst SD-WAN Validator (vBond)1 vulnerability
- 8.Microsoft1 vulnerability
- 9.Microsoft Exchange Server1 vulnerability
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
A vulnerability is exploited in the wild when the CISA Known Exploited Vulnerabilities catalogue lists it or a vendor advisory says so. The date it was first recorded as exploited is CISA's date added where it came from the catalogue, else the day Junglewise learned of it.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/exploited/2026-05-11.json, and this page as text at https://junglewise.ai/threats/exploited/2026-05-11.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Newly exploited vulnerabilities: week of 11 to 17 May 2026 (week 20)", https://junglewise.ai/threats/exploited/2026-05-11, 2 October 2026.