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CVE-2021-39293

28
FAUCET Score

CVE-2021-39293 is a high-severity denial-of-service vulnerability affecting Go versions prior to 1.16.8 and 1.17.1, specifically within the archive/zip package. A remote attacker can trigger a panic in NewReader or OpenReader functions by providing a specially crafted archive header that falsely designates a large number of files. This vulnerability has a CVSS score of 7.5, indicating a high impact on availability with low attack complexity and no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.16.8CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
>= 1.17.0, < 1.17.1CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:cloud_insights_telegraf:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.93%
Probability of exploitation in next 30 days
EPSS Percentile
93.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0693 is in the 89th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (56)

redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/kn-cli-artifacts-rhel8:0.26.0-2
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-apiserver-receive-adapter-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-controller-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-in-memory-channel-controller-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-in-memory-channel-dispatcher-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-mtbroker-filter-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-mtbroker-ingress-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-mtchannel-broker-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-mtping-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-storage-version-migration-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-sugar-controller-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/eventing-webhook-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/ingress-rhel8-operator:1.20.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/knative-rhel8-operator:1.20.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/client-kn-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/kourier-control-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/net-istio-controller-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/net-istio-webhook-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serverless-operator-bundle:1.20.0-3
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serverless-rhel8-operator:1.20.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-activator-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-autoscaler-hpa-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-autoscaler-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-controller-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-domain-mapping-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-domain-mapping-webhook-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-queue-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-storage-version-migration-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/serving-webhook-rhel8:0.26.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1/svls-must-gather-rhel8:1.20.0-1
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1-tech-preview/eventing-kafka-broker-controller-rhel8:0.26.0-2
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1-tech-preview/eventing-kafka-broker-dispatcher-rhel8:0.26.0-2
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1-tech-preview/eventing-kafka-broker-receiver-rhel8:0.26.0-2
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serveless 1.20Fixed in: openshift-serverless-1-tech-preview/eventing-kafka-broker-webhook-rhel8:0.26.0-2
View patch
redhatpatch availablevia redhat_api
Product: Openshift Serverless 1 on RHEL 8Fixed in: openshift-serverless-clients-0:0.26.0-2.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: go-toolset:rhel8-8060020220221035359.76a129d7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.6Fixed in: rhmtc/openshift-migration-velero-rhel8:v1.6.5-3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.9Fixed in: openshift4/ose-installer:v4.9.0-202202212240.p0.g4391c01.assembly.stream
View patch
redhatpatch availablevia redhat_api
Product: RHACS-3.67-RHEL-8Fixed in: advanced-cluster-security/rhacs-rhel8-operator:3.67.0-3
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-grafana
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-grafana
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-operator
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-prometheus
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift-clients
redhatno patchvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/clair-rhel8
redhatno patchvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-builder-rhel8
redhatno patchvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-operator-rhel8
redhatno patchvia redhat_api
Product: OpenShift ServerlessFixed in: CLI
redhatno patchvia redhat_api
Product: OpenShift ServerlessFixed in: knative-eventing
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: grafana
redhatend of lifevia redhat_api
Product: Service Telemetry Framework 1.2 for RHEL 8Fixed in: smart-gateway-container
redhatend of lifevia redhat_api
Product: Service Telemetry Framework 1.2 for RHEL 8Fixed in: stf/sg-core-rhel8
redhatend of lifevia redhat_api
Product: Service Telemetry Framework 1.3 for RHEL 8Fixed in: stf/sg-core-rhel8

Vendor Advisories (1)

redhatCVE-2021-39293Moderate

golang: archive/zip: malformed archive may cause panic or memory exhaustion (incomplete fix of CVE-2021-33196)

Aug 18, 2021

References

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