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CVE-2021-27277

HIGH
Published 2021-04-22T17:50:13
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CVSS Score

V3.0
7.8
/10
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.022
probability
of exploitation in the wild

There is a 2.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.837
Higher than 83.7% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

This vulnerability allows local attackers to escalate privileges on affected installations of SolarWinds Orion Virtual Infrastructure Monitor 2020.2. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the OneTimeJobSchedulerEventsService WCF service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-11955.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

SolarWinds

Orion Virtual Infrastructure Monitor

Affected Versions:

2020.2

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

solarwinds
orion virtual infrastructure monitor

ENISA Scoring

CVSS Score (3.0)

7.8
/10
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score

2.210
probability

ENISA References

https://www.zerodayinitiative.com/advisories/ZDI-21-373/
https://documentation.solarwinds.com/en/Success_Center/SAM/Content/Release_Notes/SAM_2020-2-5_release_notes.htm#Fixed

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-jv8c-r873-24qg

Advisory Details

This vulnerability allows local attackers to escalate privileges on affected installations of SolarWinds Orion Virtual Infrastructure Monitor 2020.2. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the OneTimeJobSchedulerEventsService WCF service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-11955.

CVSS Scoring

CVSS Score

7.5

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-27277
WEB https://documentation.solarwinds.com/en/Success_Center/SAM/Content/Release_Notes/SAM_2020-2-5_release_notes.htm#Fixed
WEB https://www.zerodayinitiative.com/advisories/ZDI-21-373

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://www.zerodayinitiative.com/advisories/ZDI-21-373/
https://documentation.solarwinds.com/en/Success_Center/SAM/Content/Release_Notes/SAM_2020-2-5_release_notes.htm#Fixed
Published: 2021-04-22T17:50:13
Last Modified: 2024-08-03T20:48:16.038Z
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