CVE-2021-34125

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.96% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 59.0% of scored records. A rank, not a probability.

NVD base score

7.5 (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:H/I:N/A:N

NVD analysis status

Modified. 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

2023-03-09 00:00Z3 YR AGO

Last updated

2025-02-28 17:33Z1 YR AGO

Reserved

2021-06-07

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

dc94d23a91dcb08d20b76a8a06cb218a2c751df0816ac1a51974cd7abcb53e12

• nuttx.apache.orghttps://nuttx.apache.org/docs/latest/applications/nsh/commands.html#access-memory-mb-mh-and-mw
• www.st.comhttps://www.st.com/resource/en/application_note/dm00493651-introduction-to-stm32-microcontrollers-security-stmicroelectronics.pdf
• nuttx.apache.orghttps://nuttx.apache.org/
• gist.github.comhttps://gist.github.com/swkim101/f473b9a60e6d4635268402a2cd2025ac
• github.comhttps://github.com/PX4/PX4-Autopilot/pull/17264/commits/555f900cf52c0057e4c429ff3699c91911a21cab
• github.comhttps://github.com/apache/incubator-nuttx/pull/3292/commits/016873788280ca815ba886195535bbe601de6e48
• github.comhttps://github.com/apache/incubator-nuttx-apps/pull/647/commits/2fc1157f8585acc39f13a31612ebf890f41e76ca
• github.comhttps://github.com/PX4/PX4-Autopilot/issues/17062