Network
CESNET z.s.p.o.
AS2852registered in Czechia (CZ)hosts in 1 country
As of 2026-10-10, CESNET z.s.p.o. (AS2852, registered in Czechia) had 18 933 hosts seen in 1 country; 2 451 of them with known CVEs (1 315 distinct, 7 known to be exploited). It announces 26 IPv4 prefixes and 1 IPv6 prefix (849 920 IPv4 addresses, 413th by address space).
Known CVEs in this network
CVEs by severity: CRITICAL 169 HIGH 504 MEDIUM 579 LOW 62 UNRATED 1
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: 871 hosts with CVEs only on distribution builds whose fix may be backported.
Counted 2026-10-10 04:20 UTC
- Organisation
- CESNET
- Network type
- Educational/Research · peering policy Selective
- Website
- https://www.cesnet.cz
- Registry
- RIPE NCC · Czechia CZ · allocated 1993-12-20
- Announced prefixes
- 26 IPv4 · 1 IPv6 See them
- IPv4 address space
- 849 920 addresses · 413th of 87 264 networks by size
- Rank by exposure
- 222nd by hosts with known CVEs Ranking
- Exchange points
- 3
Routing
Most common CVEs in this network
| CVE | Hosts |
|---|---|
| CVE-2026-106585 MEDIUM 6.5 | 2 038 |
| CVE-2026-106552 MEDIUM 4.2 | 2 038 |
| CVE-2026-106582 LOW 3.7 | 2 038 |
| CVE-2026-106587 LOW 3.6 | 2 038 |
| CVE-2026-106583 LOW 2.5 | 2 038 |
| CVE-2026-106584 LOW 2.5 | 2 038 |
| CVE-2026-106586 LOW 2.5 | 2 038 |
| CVE-2026-106553 LOW 2.2 | 2 038 |
| CVE-2026-106555 LOW 2.2 | 2 038 |
| CVE-2026-60002 HIGH 7.7 | 1 963 |
| CVE-2026-60000 HIGH 7.5 | 1 963 |
| CVE-2026-59998 MEDIUM 6.5 | 1 963 |
| CVE-2026-60001 MEDIUM 6.5 | 1 963 |
| CVE-2026-59999 MEDIUM 5.9 | 1 963 |
| CVE-2026-59995 MEDIUM 5.4 | 1 963 |
| CVE-2026-59996 MEDIUM 5.4 | 1 963 |
| CVE-2026-59997 MEDIUM 5.4 | 1 963 |
| CVE-2026-73282 MEDIUM 4.8 | 1 961 |
| CVE-2026-73281 LOW 3.5 | 1 961 |
| CVE-2026-73283 LOW 2.5 | 1 961 |
| CVE-2026-106588 LOW 3.1 | 1 107 |
| CVE-2026-106589 LOW 2.9 | 1 107 |
| CVE-2026-35385 HIGH 8.1 | 578 |
| CVE-2026-35414 HIGH 8.1 | 578 |
| CVE-2026-35387 MEDIUM 6.5 | 578 |
| CVE-2026-35388 LOW 2.5 | 578 |
| CVE-2025-61984 LOW 3.6 | 477 |
| CVE-2025-61985 LOW 3.6 | 477 |
| CVE-2026-93546 HIGH 8.8 | 310 |
| CVE-2025-26465 MEDIUM 6.8 | 295 |
| CVE-2026-56154 CRITICAL 9.8 | 292 |
| CVE-2026-57941 CRITICAL 9.8 | 292 |
| CVE-2026-59797 CRITICAL 9.8 | 292 |
| CVE-2026-73636 HIGH 8.1 | 292 |
| CVE-2026-46729 HIGH 7.5 | 292 |
| CVE-2026-48005 HIGH 7.5 | 292 |
| CVE-2026-56153 HIGH 7.5 | 292 |
| CVE-2026-56449 HIGH 7.5 | 292 |
| CVE-2026-59685 HIGH 7.5 | 292 |
| CVE-2026-63045 HIGH 7.5 | 292 |
| CVE-2026-63292 HIGH 7.5 | 292 |
| CVE-2026-63686 HIGH 7.5 | 292 |
| CVE-2026-73637 HIGH 7.3 | 292 |
| CVE-2026-58415 MEDIUM 5.3 | 292 |
| CVE-2026-79768 MEDIUM 5.3 | 292 |
| CVE-2026-42528 MEDIUM 4.3 | 292 |
| CVE-2026-42356 LOW 3.7 | 292 |
| CVE-2025-32728 LOW 3.8 | 291 |
| CVE-2026-63718 HIGH 7.5 | 228 |
| CVE-2023-48795 MEDIUM 5.9 | 206 |
The 50 found on the most hosts, of 1 315 CVEs.
Most exposed hosts
Known exploited first, then by the number of CVEs.
Showing the first 100 of 2 451. Complete lists will be available to registered users.
Where its hosts are
| Country | Hosts | With CVEs |
|---|---|---|
| Czechia CZ | 18 933 | 2 451 |