Network
Web4U s.r.o.
AS39790registered in Czechia (CZ)hosts in 1 country
As of 2026-10-07, Web4U s.r.o. (AS39790, registered in Czechia) had 747 hosts seen in 1 country; 155 of them with known CVEs (558 distinct, 5 known to be exploited). It announces 5 IPv4 prefixes and 3 IPv6 prefixes (5 120 IPv4 addresses, 13 258th by address space).
Known CVEs in this network
CVEs by severity: CRITICAL 100 HIGH 233 MEDIUM 210 LOW 15
A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version.
Not counted: 78 hosts with CVEs only on distribution builds whose fix may be backported.
Counted 2026-10-07 03:22 UTC
- Organisation
- Web4U s.r.o.
- Network type
- Content / hosting · peering policy Open
- Website
- https://www.web4u.cz
- Registry
- RIPE NCC · Czechia CZ · allocated 2006-04-25
- Announced prefixes
- 5 IPv4 · 3 IPv6 See them
- IPv4 address space
- 5 120 addresses · 13 258th of 87 260 networks by size
- Rank by exposure
- 1 799th by hosts with known CVEs Ranking
- Exchange points
- 2
Routing
Most common CVEs in this network
| CVE | Hosts |
|---|---|
| CVE-2026-60002 HIGH 7.7 | 128 |
| CVE-2026-60000 HIGH 7.5 | 128 |
| CVE-2026-59998 MEDIUM 6.5 | 128 |
| CVE-2026-60001 MEDIUM 6.5 | 128 |
| CVE-2026-59999 MEDIUM 5.9 | 128 |
| CVE-2026-59995 MEDIUM 5.4 | 128 |
| CVE-2026-59996 MEDIUM 5.4 | 128 |
| CVE-2026-59997 MEDIUM 5.4 | 128 |
| CVE-2026-73282 MEDIUM 4.8 | 128 |
| CVE-2026-73281 LOW 3.5 | 128 |
| CVE-2026-73283 LOW 2.5 | 128 |
| CVE-2026-35385 HIGH 8.1 | 110 |
| CVE-2026-35414 HIGH 8.1 | 110 |
| CVE-2026-35387 MEDIUM 6.5 | 110 |
| CVE-2026-35388 LOW 2.5 | 110 |
| CVE-2025-61984 LOW 3.6 | 92 |
| CVE-2025-61985 LOW 3.6 | 92 |
| CVE-2025-32728 LOW 3.8 | 50 |
| CVE-2025-26465 MEDIUM 6.8 | 47 |
| CVE-2023-38408 CRITICAL 9.8 | 45 |
| CVE-2023-51385 MEDIUM 6.5 | 45 |
| CVE-2023-48795 MEDIUM 5.9 | 45 |
| CVE-2016-20012 MEDIUM 5.3 | 37 |
| CVE-2021-36368 LOW 3.7 | 37 |
| CVE-2020-15778 HIGH 7.4 | 30 |
| CVE-2021-41617 HIGH 7.0 | 21 |
| CVE-2023-44487 HIGH 7.5 known exploited | 18 |
| CVE-2019-6110 MEDIUM 6.8 | 17 |
| CVE-2025-23419 MEDIUM 5.3 | 17 |
| CVE-2019-6109 MEDIUM 6.8 | 16 |
| CVE-2019-6111 MEDIUM 5.9 | 16 |
| CVE-2020-14145 MEDIUM 5.9 | 16 |
| CVE-2018-15473 MEDIUM 5.3 | 16 |
| CVE-2018-20685 MEDIUM 5.3 | 16 |
| CVE-2018-15919 MEDIUM 5.3 | 15 |
| CVE-2022-31629 MEDIUM 6.5 | 13 |
| CVE-2022-31628 MEDIUM 5.5 | 13 |
| CVE-2022-4900 MEDIUM 5.5 | 13 |
| CVE-2026-93546 HIGH 8.8 | 10 |
| CVE-2026-28780 CRITICAL 9.8 | 9 |
| CVE-2026-42535 CRITICAL 9.1 | 9 |
| CVE-2026-24072 HIGH 8.8 | 9 |
| CVE-2025-58098 HIGH 8.3 | 9 |
| CVE-2026-29169 HIGH 7.5 | 9 |
| CVE-2026-34059 HIGH 7.5 | 9 |
| CVE-2025-49812 HIGH 7.4 | 9 |
| CVE-2026-29170 MEDIUM 6.1 | 9 |
| CVE-2026-33857 MEDIUM 5.3 | 9 |
| CVE-2026-34032 MEDIUM 5.3 | 9 |
| CVE-2026-33006 MEDIUM 4.8 | 9 |
The 50 found on the most hosts, of 558 CVEs.
Most exposed hosts
Known exploited first, then by the number of CVEs.
Showing the first 100 of 155. Complete lists will be available to registered users.
Where its hosts are
| Country | Hosts | With CVEs |
|---|---|---|
| Czechia CZ | 747 | 155 |