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High

Denial-of-Service in SolarWinds Web Help Desk

IdentifiersCVE-2026-28299CWE-770· Allocation of Resources Without…

CVE-2026-28299 is a denial-of-service vulnerability affecting SolarWinds Web Help Desk versions prior to 2026.2. According to the provided advisory content, successful exploitation can cause the Web Help Desk server to crash due to insufficient memory. The issue is mapped to CWE-770, indicating improper allocation of resources without limits or throttling. The provided CVSS v3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H, which indicates the flaw is remotely reachable over the network, requires no privileges or user interaction, and primarily impacts availability.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can crash the SolarWinds Web Help Desk server, causing denial of service and loss of application availability. The supplied CVSS vector indicates high availability impact, no confidentiality impact, and low integrity impact.

Mitigation

If you can’t patch tonight, do this now.

No specific mitigation beyond vendor-directed remediation was provided in the supplied content. Where immediate patching is not possible, reduce exposure by limiting network access to the Web Help Desk service to trusted users and administrative networks until the update can be applied.

Remediation

Patch, then assume compromise.

Upgrade SolarWinds Web Help Desk to version 2026.2 or later, as the vulnerability affects versions prior to 2026.2. Review the associated SolarWinds release notes and Trust Center advisory referenced in the provided content and apply the vendor-provided update.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
SolarWindsWeb Help Deskapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

8 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-28299
NVD
nvd.nist.gov/vuln/detail/CVE-2026-28299
MITRE CWE · CWE-770
Allocation of Resources Without Limits or…
Vendor Advisory
solarwinds.com/trust-center/security-advisories/CVE-2026-28299
Release Notes
documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-2_release_notes.htm