CVE-2021-35039

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.5% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/A:H

NVD analysis status

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

Red Hat severity

Moderate. 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

2021-07-07 00:57Z5 YR AGO

Last updated

2024-08-04 00:33Z2 YR AGO

Reserved

2021-06-17

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-347Improper Verification of Cryptographic SignatureBase

Data version

5.1

Document digest

ae6a32f166a28ef6849593cb92355befbc15391bcd8d910989cef42fd7e391cc

• www.openwall.comhttps://www.openwall.com/lists/oss-security/2021/07/06/3x_refsource_MISC
• github.comhttps://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75x_refsource_CONFIRM
• cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14x_refsource_CONFIRM
• www.openwall.com[oss-security] 20210706 CVE-2021-35039: Linux kernel loading unsigned kernel modules via init_module syscallhttp://www.openwall.com/lists/oss-security/2021/07/06/3mailing-listx_refsource_MLIST
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210813-0004/x_refsource_CONFIRM
• lists.debian.org[debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlmailing-listx_refsource_MLIST
• git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75x_refsource_MISC