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9.8
CRITICAL CVSS 3.1
CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability
Description

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.

INFO

Published Date :

Sept. 23, 2025, 5:15 a.m.

Last Modified :

Sept. 24, 2025, 6:11 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-26399 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Solarwinds web_help_desk
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL 49f11609-934d-4621-84e6-e02e032104d6
CVSS 3.1 CRITICAL [email protected]
Solution
Update SolarWinds Web Help Desk to patch deserialization RCE.
  • Update SolarWinds Web Help Desk to the latest version.
  • Apply any available security patches from SolarWinds.
  • Monitor systems for signs of compromise.
  • Restrict access to vulnerable systems.
Public PoC/Exploit Available at Github

CVE-2025-26399 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-26399.

URL Resource
https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26399
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-26399 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-26399 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
h4xnz/CVE-2025-26399-Exploit

None

Updated: 2 weeks, 4 days ago
1 stars 0 fork 0 watcher
Born at : Sept. 23, 2025, 4:35 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
rxerium/CVE-2025-26399

Detection for CVE-2025-26399

critical nuclei solarwinds vulnerability

Updated: 2 weeks, 4 days ago
2 stars 1 fork 1 watcher
Born at : Sept. 23, 2025, 11:34 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
PuddinCat/GithubRepoSpider

监控Github最新网络安全相关的仓库...

cve cybersecurity github spider

Shell Python Nix

Updated: 2 weeks, 5 days ago
26 stars 5 fork 5 watcher
Born at : May 9, 2025, 2:29 p.m. This repo has been linked 36 different CVEs too.
Profile Photo
rxerium/stars

A list of all of my starred repos, automated using Github Actions 🌟

github-actions stars

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : Jan. 4, 2023, 11:20 a.m. This repo has been linked 25 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 1 day, 16 hours ago
7322 stars 1208 fork 1208 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 840 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-26399 vulnerability anywhere in the article.

  • The Cyber Express
Senators Peters and Rounds Introduce Bipartisan Bill to Restore Cybersecurity Protections

In a renewed push to safeguard America’s digital infrastructure, U.S. Senators Gary Peters (D-MI) and Mike Rounds (R-SD) have introduced the Protecting America from Cyber Threats Act — a bipartisan bi ... Read more

Published Date: Oct 10, 2025 (3 days, 6 hours ago)
  • The Hacker News
Oracle Rushes Patch for CVE-2025-61882 After Cl0p Exploited It in Data Theft Attacks

Oct 06, 2025Ravie LakshmananVulnerability / Threat Intelligence Oracle has released an emergency update to address a critical security flaw in its E-Business Suite that it said has been exploited in ... Read more

Published Date: Oct 06, 2025 (1 week ago)
  • The Hacker News
Scanning Activity on Palo Alto Networks Portals Jump 500% in One Day

Oct 04, 2025Ravie LakshmananVulnerability / Network Security Threat intelligence firm GreyNoise disclosed on Friday that it has observed a spike in scanning activity targeting Palo Alto Networks log ... Read more

Published Date: Oct 04, 2025 (1 week, 2 days ago)
  • The Hacker News
CISA Flags Meteobridge CVE-2025-4008 Flaw as Actively Exploited in the Wild

Oct 03, 2025Ravie LakshmananVulnerability / IoT Security The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a high-severity security flaw impacting Smartbedded Meteob ... Read more

Published Date: Oct 03, 2025 (1 week, 3 days ago)
  • The Hacker News
ThreatsDay Bulletin: CarPlay Exploit, BYOVD Tactics, SQL C2 Attacks, iCloud Backdoor Demand & More

From unpatched cars to hijacked clouds, this week's Threatsday headlines remind us of one thing — no corner of technology is safe. Attackers are scanning firewalls for critical flaws, bending vulnerab ... Read more

Published Date: Oct 02, 2025 (1 week, 4 days ago)
  • The Hacker News
OneLogin Bug Let Attackers Use API Keys to Steal OIDC Secrets and Impersonate Apps

Oct 01, 2025Ravie LakshmananVulnerability / API Security A high-severity security flaw has been disclosed in the One Identity OneLogin Identity and Access Management (IAM) solution that, if successf ... Read more

Published Date: Oct 01, 2025 (1 week, 5 days ago)
  • The Hacker News
Red Hat OpenShift AI Flaw Exposes Hybrid Cloud Infrastructure to Full Takeover

Oct 01, 2025Ravie LakshmananAI Security / Cloud Security A severe security flaw has been disclosed in the Red Hat OpenShift AI service that could allow attackers to escalate privileges and take cont ... Read more

Published Date: Oct 01, 2025 (1 week, 5 days ago)
  • The Hacker News
Hackers Exploit Milesight Routers to Send Phishing SMS to European Users

Oct 01, 2025Ravie LakshmananVulnerability / Malware Unknown threat actors are abusing Milesight industrial cellular routers to send SMS messages as part of a smishing campaign targeting users in Eur ... Read more

Published Date: Oct 01, 2025 (1 week, 5 days ago)
  • The Hacker News
$50 Battering RAM Attack Breaks Intel and AMD Cloud Security Protections

A group of academics from KU Leuven and the University of Birmingham has demonstrated a new vulnerability called Battering RAM to bypass the latest defenses on Intel and AMD cloud processors. "We buil ... Read more

Published Date: Sep 30, 2025 (1 week, 5 days ago)
  • The Cyber Express
Google Project Zero Exposes ASLR Bypass Vulnerability in Apple’s Serialization Framework

Google Project Zero has revealed a new technique capable of bypassing Address Space Layout Randomization (ASLR) protections on Apple devices. The finding, published by security researcher Jann Horn, s ... Read more

Published Date: Sep 29, 2025 (2 weeks ago)
  • CybersecurityNews
Cybersecurity Newsletter Weekly – Chrome 0-Day, 22.2 Tbps DDOS Attack, Kali Linux Release, Cisco IOS 0-Day and More

This week in cybersecurity was marked by a relentless pace of critical disclosures and unprecedented attack volumes, underscoring the escalating challenges facing defenders. At the forefront was Googl ... Read more

Published Date: Sep 28, 2025 (2 weeks, 1 day ago)
  • Help Net Security
Week in review: Cisco ASA zero-day vulnerabilities exploited, Fortra GoAnywhere instances at risk

Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: How Juventus protects fans, revenue, and reputation during matchdays In this Help Net Security intervi ... Read more

Published Date: Sep 28, 2025 (2 weeks, 1 day ago)
  • The Cyber Express
Critical Salesforce Vulnerability ‘ForcedLeak’ Exposes AI Agent Risks in AgentForce

A recently disclosed security research report has revealed a severe vulnerability chain in Salesforce AgentForce, dubbed ForcedLeak, which highlights a new class of AI-specific threats in enterprise s ... Read more

Published Date: Sep 26, 2025 (2 weeks, 3 days ago)
  • The Cyber Express
Agencies Around the Globe Urge Patching of Cisco ASA Bug Under Active Exploit

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued Emergency Directive 25-03 in response to an ongoing and severe cybersecurity threat targeting vulnerabilities in Cisco Adapt ... Read more

Published Date: Sep 26, 2025 (2 weeks, 3 days ago)
  • The Cyber Express
2025 Ransomware Trends: How Australia’s Wealth Makes It a Prime Target

Australia’s strong economy and high per-capita wealth have made it a prime target for ransomware groups, with the country facing a disproportionate number of attacks compared to many other nations. In ... Read more

Published Date: Sep 26, 2025 (2 weeks, 3 days ago)
  • The Cyber Express
SolarWinds Issues Third Patch to Address Persistent Web Help Desk RCE Vulnerability

SolarWinds has released a new hotfix aimed at resolving a critical remote code execution (RCE) vulnerability affecting its Web Help Desk (WHD) software. The flaw, now identified as CVE-2025-26399, mar ... Read more

Published Date: Sep 25, 2025 (2 weeks, 4 days ago)
  • Help Net Security
Cisco fixes IOS/IOS XE zero-day exploited by attackers (CVE-2025-20352)

Cisco has fixed 14 vulnerabilities in IOS and IOS XE software, among them CVE-2025-20352, a high-severity vulnerability that has been exploited in zero-day attacks. About CVE-2025-20352 Cisco IOS soft ... Read more

Published Date: Sep 25, 2025 (2 weeks, 4 days ago)
  • Help Net Security
SolarWinds fixes critical Web Help Desk RCE vulnerability (CVE-2025-26399)

SolarWinds has fixed yet another unauthenticated remote code execution vulnerability (CVE-2025-26399) in Web Help Desk (WHD), its popular web-based IT ticketing and asset management solution. While th ... Read more

Published Date: Sep 24, 2025 (2 weeks, 5 days ago)
  • The Cyber Express
22 Vulnerabilities Under Attack – And Another That Could Be

Cyble researchers detailed 22 vulnerabilities under active attack in a blog post today – and nine of them aren’t in CISA’s Known Exploited Vulnerabilities (KEV) catalog. Twelve of the vulnerabilities ... Read more

Published Date: Sep 23, 2025 (2 weeks, 5 days ago)
  • The Register
Third time's the charm? SolarWinds (again) patches critical Web Help Desk RCE

SolarWinds on Tuesday released a hotfix - again - for a critical, 9.8-severity flaw in its Web Help Desk IT ticketing software that could allow a remote, unauthenticated attacker to run commands on a ... Read more

Published Date: Sep 23, 2025 (2 weeks, 5 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-26399 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Sep. 23, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-502
    Added Reference https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm
    Added Reference https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26399
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact