CVE-2021-35247

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-01-21. Federal remediation due 2022-02-04.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.9% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-01-07 22:39Z4 YR AGO

Last updated

2025-10-21 23:15Z1 YR AGO

Reserved

2021-06-22

Assigning CNA

SolarWinds

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

5342eb60f522376c35031b42025f8dc7c5c99996d9251a388261a338eb142361

• www.solarwinds.comhttps://www.solarwinds.com/trust-center/security-advisories/cve-2021-35247x_refsource_MISC
• documentation.solarwinds.comhttps://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3_release_notes.htmx_refsource_MISC
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35247government-resource