Is CVE-2026-28318 in the CISA KEV catalog?

Yes. CVE-2026-28318 is on the CISA Known Exploited Vulnerabilities list, added 2026-06-05.

What is the CVSS severity of CVE-2026-28318?

CVE-2026-28318 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-28318?

CVE-2026-28318 has an EPSS score of 10.66% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-28318

HIGHCISA KEVEPSS 95th pctl

7.5

CVSS v3

NVD

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

CWE-400Resource Exhaustion

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

10.66%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-06-19

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-05.