Skip to main content

CVE-2020-10148

CRITICAL
Authentication Bypass Using an Alternate Path or Channel (CWE-288)
2020-12-29 cret@cert.org
9.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V14 - Configuration Dependency management, component inventory
Impact

Extreme risk. The SolarWinds SUNBURST attack was the most significant supply chain compromise in cybersecurity history, affecting US government agencies (Treasury, Commerce, DHS), Fortune 500 companies, and critical infrastructure globally.

Exploit ScenarioDerived

As part of the SUNBURST campaign, Russian SVR operatives compromised SolarWinds' build infrastructure to insert the SUNBURST backdoor into Orion software updates. Once installed on victim networks, the backdoor used the API authentication bypass to execute privileged operations for lateral movement and data exfiltration.

Emergency Immediate action required. Why: CRITICAL + in CISA KEV (actively exploited), no patch available.
Exploited in the wild (CISA KEV) No patch listed yet 94.3% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 26, 2026

SolarWinds Orion API contains an authentication bypass that allows unauthenticated remote attackers to execute API commands, related to the massive SUNBURST supply chain attack discovered in December 2020.

Earlier versions of this analysis (1)
v1 Mar 26, 2026 - 11:19 CVSS 9.8

The SolarWinds Orion Platform API is vulnerable to authentication bypass allowing unauthenticated remote command execution, connected to the historic SUNBURST supply chain compromise attributed to Russian SVR intelligence.

RemediationAI

Update SolarWinds Orion to patched versions. Assume compromise if running affected versions during the SUNBURST campaign window (March-December 2020). Conduct thorough incident response including credential rotation and Active Directory review.

Affected ProductsAI

SolarWinds Orion Platform 2019.4 HF 5 SolarWinds Orion Platform 2020.2 with no hotfix SolarWinds Orion Platform 2020.2 HF 1

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The CWE-288 authentication bypass allows attackers to invoke privileged Orion API commands without credentials. This vulnerability was part of the broader SUNBURST campaign where SolarWinds build systems were compromised to distribute backdoored Orion updates to 18,000+ organizations.

Know when the next one hits your stack

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Added to CISA KEV
Oct 24, 2025 - 14:36 cisa
CISA KEV
CVE Published
Dec 29, 2020 - 22:15 nvd
CRITICAL 9.8

DescriptionCVE.org

The SolarWinds Orion API is vulnerable to an authentication bypass that could allow a remote attacker to execute API commands. This vulnerability could allow a remote attacker to bypass authentication and execute API commands which may result in a compromise of the SolarWinds instance. SolarWinds Orion Platform versions 2019.4 HF 5, 2020.2 with no hotfix installed, and 2020.2 HF 1 are affected.

Executive ViewAI

Why It Matters

Organizations using SolarWinds Orion API face critical risk from CVE-2020-10148 rated CVSS 9.8. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. This vulnerability is actively exploited in the wild (KEV-listed) and requires immediate remediation. Immediate patching is required per CISA KEV mandate.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

Threat Score
9.8/10
Composite threat intelligence
EPSS Score
94.3%
Top 0% exploitable
Threat Intel
3
1 sources
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV Yes
Public POC Yes
EPSS 94.3%
Patch available No
Active threat Yes
Deciding rule
CRITICAL + in CISA KEV (actively exploited), no patch available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

223
Low Medium High Critical
KEV: +50
EPSS: +94
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: +10
Gov advisory: 0

Threat IntelligenceMISP

Threat Actors
BRONZE SPIRAL
Malware Families
SUPERNOVA
ATT&CK Techniques (observed)
Sources: MITRE ATT&CK, MISP Galaxies (CC0), Metasploit/Nuclei

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy