CVE-2021-32765

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

2.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 81.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/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

Important. 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

2021-10-04 00:00Z5 YR AGO

Last updated

2024-08-03 23:33Z2 YR AGO

Reserved

2021-05-12

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-190Integer Overflow or WraparoundBase
• CWE-680Integer Overflow to Buffer OverflowCompound

Data version

5.1

Document digest

cc745b86602dccdf9df28bb4d45924d9be1b14537655db5e6ee375cf3b509ddd

• github.comhttps://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2
• github.comhttps://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e
• wiki.sei.cmu.eduhttps://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multiplied%2C+do+not+wrap
• lists.debian.org[debian-lts-announce] 20211012 [SECURITY] [DLA 2783-1] hiredis security updatehttps://lists.debian.org/debian-lts-announce/2021/10/msg00007.htmlmailing-list
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211104-0003/
• security.gentoo.orgGLSA-202210-32https://security.gentoo.org/glsa/202210-32vendor-advisory