CVE-2022-21716

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.6% 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

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

2022-03-03 00:00Z4 YR AGO

Last updated

2025-04-22 18:21Z1 YR AGO

Reserved

2021-11-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

a9dee5331bba09da3b15c6fbc2ac290df527f2481855edf423affd27ebb6fb14

• github.comhttps://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx
• github.comhttps://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9
• github.comhttps://github.com/twisted/twisted/releases/tag/twisted-22.2.0
• twistedmatrix.comhttps://twistedmatrix.com/trac/ticket/10284
• lists.debian.org[debian-lts-announce] 20220308 [SECURITY] [DLA 2938-1] twisted security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00009.htmlmailing-list
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.html
• lists.fedoraproject.orgFEDORA-2022-71b66d4747https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-9a489fa494https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/vendor-advisory
• security.gentoo.orgGLSA-202301-02https://security.gentoo.org/glsa/202301-02vendor-advisory