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Vulnerability details: VCID-q1wc-cc97-aaam
Vulnerability ID VCID-q1wc-cc97-aaam
Aliases CVE-2021-33194
GHSA-83g2-8m93-v3w7
Summary golang.org/x/net before v0.0.0-20210520170846-37e1c6afe023 allows attackers to cause a denial of service (infinite loop) via crafted ParseFragment input.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
System Score Found at
rhas Moderate https://access.redhat.com/errata/RHSA-2021:2438
rhas Moderate https://access.redhat.com/errata/RHSA-2021:3759
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4627
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33194.json
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00014 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00147 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
epss 0.00155 https://api.first.org/data/v1/epss?cve=CVE-2021-33194
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1963232
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.5 https://github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7
generic_textual HIGH https://github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7
cvssv3.1 7.5 https://go.dev/cl/311090
generic_textual HIGH https://go.dev/cl/311090
cvssv3.1 7.5 https://go.dev/issue/46288
generic_textual HIGH https://go.dev/issue/46288
cvssv3.1 7.5 https://go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7
generic_textual HIGH https://go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7
cvssv3.1 7.5 https://groups.google.com/g/golang-announce/c/wPunbCPkWUg
generic_textual HIGH https://groups.google.com/g/golang-announce/c/wPunbCPkWUg
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-33194
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-33194
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-33194
cvssv3.1 7.5 https://pkg.go.dev/vuln/GO-2021-0238
generic_textual HIGH https://pkg.go.dev/vuln/GO-2021-0238
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33194.json
https://api.first.org/data/v1/epss?cve=CVE-2021-33194
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33194
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7
https://go.dev/cl/311090
https://go.dev/issue/46288
https://go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7
https://groups.google.com/g/golang-announce/c/wPunbCPkWUg
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM/
https://pkg.go.dev/vuln/GO-2021-0238
1963232 https://bugzilla.redhat.com/show_bug.cgi?id=1963232
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
CVE-2021-33194 https://nvd.nist.gov/vuln/detail/CVE-2021-33194
RHSA-2021:2438 https://access.redhat.com/errata/RHSA-2021:2438
RHSA-2021:3759 https://access.redhat.com/errata/RHSA-2021:3759
RHSA-2021:4627 https://access.redhat.com/errata/RHSA-2021:4627
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33194.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://go.dev/cl/311090
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://go.dev/issue/46288
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://groups.google.com/g/golang-announce/c/wPunbCPkWUg
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-33194
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-33194
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-33194
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://pkg.go.dev/vuln/GO-2021-0238
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.01781
EPSS Score 0.00014
Published At May 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.