CVE-2021-34550

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.7% 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:N/I:N/A:H

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

2021-06-29 11:11Z5 YR AGO

Last updated

2024-08-04 00:12Z2 YR AGO

Reserved

2021-06-10

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

5870d1bf6f730236f622d6441241f28fa51d1ab43aa95b4d388325c54eab98e0

• gitlab.torproject.orghttps://gitlab.torproject.org/tpo/core/tor/-/issues/40392x_refsource_MISC
• blog.torproject.orghttps://blog.torproject.org/node/2041x_refsource_CONFIRM
• security.gentoo.orgGLSA-202107-25https://security.gentoo.org/glsa/202107-25vendor-advisoryx_refsource_GENTOO