CVE-2021-39293

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-24 · updated 2026-06-17
Weakness: CWE-770

Description

In archive/zip in Go before 1.16.8 and 1.17.x before 1.17.1, a crafted archive header (falsely designating that many files are present) can cause a NewReader or OpenReader panic. NOTE: this issue exists because of an incomplete fix for CVE-2021-33196.

Affected products

Go: before 1.16.8; from 1.17.0 before 1.17.1 — fixed in 1.16.8, 1.17.1
NetApp Cloud Insights Telegraf: all versions

How to fix

Upgrade to a fixed version: Go 1.16.8, 1.17.1. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://groups.google.com/g/golang-announce/c/dx9d7IOseHw
https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
https://security.netapp.com/advisory/ntap-20220217-0009/
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://groups.google.com/g/golang-announce/c/dx9d7IOseHw
https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
https://security.netapp.com/advisory/ntap-20220217-0009/

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