CVE-2021-28918

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

16.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 96.7% of scored records. A rank, not a probability.

NVD base score

9.1 (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:H/I:H/A:N

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

2021-04-01 12:33Z5 YR AGO

Last updated

2024-08-03 21:55Z2 YR AGO

Reserved

2021-03-19

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-704Incorrect Type Conversion or CastClass
• CWE-918Server-Side Request Forgery (SSRF)Base

Data version

5.1

Document digest

9ccc713affa03389c77e9035822a155e8f77e8b2a00de7b799a4115c88237d46

• www.npmjs.comhttps://www.npmjs.com/package/netmaskx_refsource_MISC
• github.comhttps://github.com/rs/node-netmaskx_refsource_MISC
• www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/critical-netmask-networking-bug-impacts-thousands-of-applications/x_refsource_MISC
• github.comhttps://github.com/advisories/GHSA-pch5-whg9-qr2rx_refsource_MISC
• github.comhttps://github.com/sickcodes/security/blob/master/advisories/SICK-2021-011.mdx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210528-0010/x_refsource_CONFIRM
• rootdaemon.comhttps://rootdaemon.com/2021/03/29/vulnerability-in-netmask-npm-package-affects-280000-projects/x_refsource_MISC