Widely-used enterprise help desk; potential downtime across orgs.
CVE-2026-28299
DoS in SolarWinds Web Help Desk memory exhaustion
Is CVE-2026-28299 being exploited?
Not confirmed. CVE-2026-28299 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-28299?
CVE-2026-28299 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28299?
Yes. A fix has been recorded for CVE-2026-28299. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28299 affect?
CVE-2026-28299 affects SolarWinds Web Help Desk. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28299?
Monitor exposure; patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote DoS via memory exhaustion can crash the WHD server, causing downtime.
Monitor only
- affected2026.1 and all previous versions
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.