CVE-2021-27851

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

0.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 26.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-04-26 15:35Z5 YR AGO

Last updated

2024-09-17 02:11Z2 YR AGO

Reserved

2021-03-01

Assigning CNA

certcc

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-264
• CWE-59Improper Link Resolution Before File Access ('Link Following')Base

Data version

5.1

Document digest

e5fae20a52844950cea83096aec50fbb7980a5e400ce07e3088daa3a0bd6d66d

• guix.gnu.orghttps://guix.gnu.org/en/blog/2021/risk-of-local-privilege-escalation-via-guix-daemon/x_refsource_MISC
• bugs.gnu.orghttps://bugs.gnu.org/47229x_refsource_MISC