CVE-2021-34485

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of 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

2.06% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-07.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2021-08-12 18:11Z5 YR AGO

Last updated

2026-10-07 16:10Z22 DAYS AGO

Reserved

2021-06-09

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

Medium (CVSS 5.0)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-732Incorrect Permission Assignment for Critical ResourceClass

Data version

5.2

Document digest

3e92f8da239e6ea6b49238b70ce79fa39d178812406de6b3858d9790fae38108

• msrc.microsoft.com.NET Core and Visual Studio Information Disclosure Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34485vendor-advisorypatch
• portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34485x_refsource_MISC