CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Called exploited 1 day after disclosure.
Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.
The life of this vulnerability
- CVE published
- First KEV listing1d
- Last sighting35d
Gaps are compressed to equal steps. The elapsed time is printed under each.
Which catalogues call it exploited
- CISA KEVUS federallisted Jun 5, 2026
- EUVDENISA, European Unionlisted Jun 5, 2026
- VulnCheck KEVcommercial researchlisted Jun 5, 2026
- CIRCLaggregator, mirrors the abovelisted Jun 5, 2026, not counted
3 catalogues list it. CIRCL aggregates the others and is shown but not counted.
Public exploitation evidence
- reported exploitationwww.recordedfuture.com/blog/june-2026-cve-landscape
- reported exploitationwww.bitdefender.com/en-us/blog/businessinsights/bitdefender-
- reported exploitationwww.cisa.gov/sites/default/files/feeds/known_exploited_vulne
3 public reports collected from VulnCheck and CIRCL, first on Jun 5, 2026. Each links to its original source. We have not verified them.
Description
SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.