Page generated: 08 Nov 2026, 11:27 UTC
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CVE-2025-26399

SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which …

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SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.8: +1.47
  • Fresh EPSS: 90.56%: +0.45

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 16 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Record from Recorded Future News
Press · 10 Mar 2026, 07:00 · CISA shortens patch deadline for critical Ivanti, SolarWinds bugs - The Record from Recorded Future News
The Hacker News
Press · 10 Mar 2026, 07:00 · CISA Flags SolarWinds, Ivanti, and Workspace One Vulnerabilities as Actively Exploited - The Hacker News
watchTowr Labs
Press · 25 Feb 2026, 08:00 · Buy A Help Desk, Bundle A Remote Access Solution? (SolarWinds Web Help Desk Pre-Auth RCE Chain(s)) - watchTowr Labs
SecurityWeek
Press · 09 Feb 2026, 08:00 · Recent SolarWinds Flaws Potentially Exploited as Zero-Days - SecurityWeek
The Hacker News
Press · 09 Feb 2026, 08:00 · SolarWinds Web Help Desk Exploited for RCE in Multi-Stage Attacks on Exposed Servers - The Hacker News
See all 16 source documents
Huntress
Press · 08 Feb 2026, 08:00 · Active Exploitation of SolarWinds Web Help Desk (CVE-2025-26399) - Huntress
Microsoft
Press · 06 Feb 2026, 08:00 · Analysis of active exploitation of SolarWinds Web Help Desk - Microsoft
The Hacker News
Press · 29 Jan 2026, 08:00 · SolarWinds Fixes Four Critical Web Help Desk Flaws With Unauthenticated RCE and Auth Bypass - The Hacker News
Help Net Security
Press · 24 Sep 2025, 07:00 · SolarWinds fixes critical Web Help Desk RCE vulnerability (CVE-2025-26399) - Help Net Security
Cyber Daily
Press · 24 Sep 2025, 07:00 · SolarWinds releases third Web Help Desk patch to address known flaw - Cyber Daily
Cyber Press
Press · 23 Sep 2025, 07:00 · Privilege Escalation Vulnerability Discovered in SolarWinds Web Help Desk - Cyber Press
Computer Weekly
Press · 23 Sep 2025, 07:00 · SolarWinds warns over dangerous RCE flaw - Computer Weekly
BleepingComputer
Press · 23 Sep 2025, 07:00 · SolarWinds releases third patch to fix Web Help Desk RCE bug - BleepingComputer
SecurityWeek
Press · 23 Sep 2025, 07:00 · SolarWinds Makes Third Attempt at Patching Exploited Vulnerability - SecurityWeek
The Hacker News
Press · 23 Sep 2025, 07:00 · SolarWinds Releases Hotfix for Critical CVE-2025-26399 Remote Code Execution Flaw - The Hacker News
Arctic Wolf
Press · 23 Sep 2025, 07:00 · Recommendation for CVE-2025-26399 - Arctic Wolf

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.9 (2026-11-02 15:13). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.8; EPSS 90.6%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:59:31.695937+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
23 Sep 2025, 05:07
First press mention
23 Sep 2025, 07:00
Added to the CISA KEV catalog
09 Mar 2026, 00:00
Latest press mention
10 Mar 2026, 07:00
Score calculated
05 Nov 2026, 13:59