CVE-2021-44716

mediumpriority · track · 31EPSS 0.040 · 90 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.96% (90th) EPSS

CVSS 5 · medium

Is it mine?

55 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-22

net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedBrownfield Connectivity - Gatewaysiemens_psirt
Update to V1.11 or later version Contact customer support to obtain the update <https://support.industry.siemens.com/cs/de/de/view/109801700>
FixedBrownfield Connectivity - Gatewaycisa_csaf_ot
Update to V1.11 or later version Contact customer support to obtain the update <https://support.industry.siemens.com/cs/de/de/view/109801700>

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-400USCWE-400USCWE-400USCWE-400US

affected products (55)

Products and version ranges known to be affected.

Dell ECS <3.8.1.0all versionscert_bundDE
Dell PowerEdgeall versionscert_bundDEcpe:/h:dell:poweredge:-
IBM InfoSphere Information Serverall versionscert_bundDEcpe:/a:ibm:infosphere_information_server:-
Dell ECS< 3.8.1.0cert_bundDE
Brownfield Connectivity - Gatewayall versionscisa_csaf_otUS
Siemens Brownfield Connectivity - Gateway< V1.10cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 24.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 25.10fstec_bduRU
Canonical Ltd. Ubuntu≤ 18.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 16.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 26.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 22.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 20.04 LTSfstec_bduRU
Red Hat, Inc. Cryostat≤ 2 on RHEL 8fstec_bduRU
Red Hat, Inc. OpenShift Serverless≤ 1 on RHEL 8fstec_bduRU
Red Hat, Inc. Openshift Service Mesh≤ 2.0fstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 8.4 Extended Update Supportfstec_bduRU
Red Hat, Inc. Red Hat Enterprise Linux≤ 8fstec_bduRU
Red Hat, Inc. Red Hat Gluster Storage≤ 3.5 for RHEL 7fstec_bduRU

showing 20 of 55

advisories (12)

Vendor and ecosystem advisories describing this.

SSA-744259SSA-744259: Golang Vulnerabilities in Brownfield Connectivity - Gateway before V1.10.12023-02-14csaf · siemens_psirtDE
Siemens has released a new version for Brownfield Connectivity - Gateway that contains fixes for multiple vulnerabilities in the underlying Golang implementation. Successful exploitation of these vulnerabilities could lead to Denial of Service (DoS). Siemens has released an update for Brownfield Connectivity - Gateway and recommends to update to the latest version.
WID-SEC-W-2022-0510IBM DB2: Mehrere SchwachstellenDeutsch2022-06-29csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in IBM DB2 ausnutzen, um Dateien zu manipulieren, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen, willkürlichen Code mit erhöhten Rechten auszuführen, Informationen falsch darzustellen und beliebigen Code auszuführen.
WID-SEC-W-2022-0967Red Hat Enterprise Linux (go-toolset): Mehrere SchwachstellenDeutsch2021-12-16csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux und Oracle Linux ausnutzen, um einen Denial of Service Angriff durchzuführen und vertrauliche Informationen offenzulegen.
WID-SEC-W-2023-0204Red Hat OpenShift: Mehrere SchwachstellenDeutsch2023-01-25csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um beliebigen Programmcode auszuführen, Dateien zu manipulieren, einen Denial of Service Zustand herbeizuführen oder Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2023-0426IBM Spectrum Protect: Mehrere SchwachstellenDeutsch2022-03-13csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in IBM Spectrum Protect ausnutzen, um einen 'Denial of Service'-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, einen 'Cross-Site-Scripting'-Angriff durchzuführen, beliebigen Code auszuführen, sensible Informationen offenzulegen und seine Privilegien zu erweitern.
WID-SEC-W-2023-1524IBM Spectrum Protect Plus: Mehrere SchwachstellenDeutsch2022-01-31csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in IBM Spectrum Protect Plus ausnutzen, um einen Denial-of-Service-Zustand zu verursachen, seine Privilegien zu erweitern, Sicherheitsmaßnahmen zu umgehen und beliebigen Code auszuführen.
WID-SEC-W-2023-2229Splunk Splunk Enterprise: Mehrere SchwachstellenDeutsch2023-08-30csaf · cert_bundDE
Ein entfernter, authentifizierter Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, einen 'Denial of Service'-Zustand zu verursachen, seine Privilegien zu erweitern und weitere, nicht spezifizierte Auswirkungen zu verursachen.
WID-SEC-W-2024-0794Dell ECS: Mehrere SchwachstellenDeutsch2024-04-04csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell ECS ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode mit Administratorrechten auszuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.
GHSA-vc3p-29h2-gpcpgolang.org/x/net/http2 allows uncontrolled memory consumption2022-01-02ghsa · osvUS
net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.
ICSA-23-047-04Siemens Brownfield Connectivity Gateway2023-02-14icsa · cisa_csaf_otUS
Siemens has released a new version for Brownfield Connectivity - Gateway that contains fixes for multiple vulnerabilities in the underlying Golang implementation. Successful exploitation of these vulnerabilities could lead to Denial of Service (DoS). Siemens has released an update for Brownfield Connectivity - Gateway and recommends to update to the latest version.
BIT-golang-2021-447162024-03-06vendor · osvUS
net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.
GO-2022-0288Unbounded memory growth in net/http and golang.org/x/net/http22022-07-15vendor · osvUS
An attacker can cause unbounded memory growth in servers accepting HTTP/2 requests.

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund cisa_csaf_ot siemens_psirt NVD CVE.org MITRE

published 2022-01-01modified 2026-10-09

related (9,569)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-28318US	—OT critical	43.7% (99th)	KEV	2026-06-04
SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provi…
CVE-2026-45498US	high7.5OT critical	1.27% (70th)	KEV	2026-05-20
Microsoft Defender Denial of Service Vulnerability
CVE-2023-44487US	high7.5OT critical	100.0% (100th)	KEV	2023-10-10
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through…
CVE-2023-38180US	—OT critical	14.0% (97th)	KEV	2023-08-08
.NET and Visual Studio Denial of Service Vulnerability
CVE-2021-44228US	critical10.0OT critical	100.0% (100th)	KEV	2021-12-10
Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect agai…

+9564 more

references (69)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan