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CVE-2025-40554· NVD / CVE Program· CNA SolarWinds

SolarWinds Web Help Desk Authentication Bypass Vulnerability

SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that, if exploited, could allow an attacker to invoke specific actions within Web Help Desk.

CriticalCVSS 9.8 · v3.1—Proof of concept No fix recorded
Published
Jan 28, 2026
Updated
Jun 17, 2026
EPSS
60.6% · 99th percentile
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Report tools

JSON

Action score

57

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
18 / 30 · 60.6%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · SolarWinds
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

VendorProduct
solarwindsweb help desk

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • solarwinds web help deskbefore 2026.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (SolarWinds). Independent of NVD's CPE analysis and usually ahead of it.

  • SolarWinds Web Help Desk

    • 12.8.8 HF1 and belowaffected

Same product

solarwinds: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-26399SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation VulnerabilityKEV
    96Now
  • CVE-2025-40551SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution VulnerabilityKEV
    94Now
  • CVE-2024-28987SolarWinds Web Help Desk Hardcoded Credential VulnerabilityKEV
    94Now
  • CVE-2024-28986SolarWinds Web Help Desk Java Deserialization Remote Code Execution VulnerabilityKEV
    94Now
  • CVE-2025-40536SolarWinds Web Help Desk Security Control Bypass VulnerabilityKEV
    91Now
  • CVE-2025-40553SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
    59Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2025-40554 —
Proof-of-concept repository on GitHubstars:12026-01-29
Proof-of-concept repository on GitHubstars:02026-01-31

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+1 d
  3. TodayOct 1, 2026+246 d
EPSS, last 120 days+2% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-405520 days apartSolarWinds Web Help Desk Authentication Bypass Vulnerability
    55Plan

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-1390 · Weak Authentication

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records