CVE-2021-35219

Arbitrary file read via unrestricted alert import

Published Aug 31, 2021 · Updated Aug 4, 2024

Arbitrary file read in SolarWinds Platform 2020.2.5 and earlier allows local users to read server files through alert import. The Alerts Settings ImportAlert function supplies an unrestricted file reference to ExportToPdfCmd, which returns the referenced server file. Exploitation requires high privileges and local access to the platform server, and the published impact is limited to confidentiality.

CVSS severity6.0
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in SolarWinds Platform 2020.2.5 and earlier allows local users to read server files through alert import. The Alerts Settings ImportAlert function supplies an unrestricted file reference to ExportToPdfCmd, which returns the referenced server file. Exploitation requires high privileges and local access to the platform server, and the published impact is limited to confidentiality.

The record

CVE
CVE-2021-35219
Published
Aug 31, 2021
Updated
Aug 4, 2024
Vendor
SolarWinds
Product
SolarWinds Platform
Classifications
T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 31, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2020.2.6 and previous versions <=2020.2.6 HF1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

SolarWinds · SolarWinds Platformversion=2020.2.6 and previous versions <=2020.2.6 HF1

Published CVSS scores

6.0SolarWindsCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
4.9NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0NVDAV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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