CVE-2025-40536 (GCVE-0-2025-40536)
Vulnerability from cvelistv5 – Published: 2026-01-28 07:30 – Updated: 2026-02-26 15:04Title
SolarWinds Web Help Desk Security Control Bypass Vulnerability
Summary
SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.
Severity
8.1 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-13 04:56 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.solarwinds.com/trust-center/security-… | vendor-advisorypatch |
| https://documentation.solarwinds.com/en/success_c… | release-notes |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
| https://www.huntress.com/blog/active-exploitation… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SolarWinds | Web Help Desk |
Affected:
12.8.8 HF1 and below
|
Date Public
2026-01-28 07:25
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 2f8e5184-e7bc-4286-bac7-950b09ce6429
Exploited: Yes
Timestamps
First Seen: 2026-02-12
Asserted: 2026-02-12
Scope
Notes: SolarWinds Web Help Desk Security Control Bypass Vulnerability | Affected: SolarWinds / Web Help Desk | Description: SolarWinds Web Help Desk contains a security control bypass vulnerability that could allow an unauthenticated attacker to gain access to certain restricted functionality. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-02-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm ; https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 ; https://nvd.nist.gov/vuln/detail/CVE-2025-40536
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-693 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Web Help Desk |
| Due Date | 2026-02-15 |
| Date Added | 2026-02-12 |
| Vendorproject | SolarWinds |
| Vulnerabilityname | SolarWinds Web Help Desk Security Control Bypass Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 010c199e-8096-460b-8f0d-36fd5a691f23
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: SolarWinds Web Help Desk Security Control Bypass Vulnerability | Affected: SolarWinds / Web Help Desk | CVSS: 8.1 (HIGH) | EPSS: 0.73562 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | SolarWinds Web Help Desk Security Control Bypass Vulnerability |
| Cve Id | CVE-2025-40536 |
| Vendor | SolarWinds |
| Ghsa Id | None |
| Product | Web Help Desk |
| Added Date | 2026-06-01T10:50:56.244Z |
| Cvss Score | 8.1 |
| Epss Score | 0.73562 |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99456 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2025-40536 |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:09 CEST
| Updated: 2026-10-02 09:09 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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