CVE-2021-34193

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

1.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 70.4% 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

2023-08-22 00:00Z3 YR AGO

Last updated

2025-11-03 21:44Z10 MO 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-787Out-of-bounds WriteBase

Data version

5.2

Document digest

c24ad2bf21a75bdbebe5a6f69710cdd15ae20a1c5de5fa07c65472a8262a6f0b

• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27719
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30800
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30112
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28768
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28855
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32149
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28185
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29912
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28843
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31540
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28383
• bugs.chromium.orghttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31448
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/12/msg00026.html