CVE-2021-45485

mediumpriority · track · 41OT risk · elevatedEPSS 0.038 · 90 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

3.82% (90th) EPSS

CVSS 5 · medium

Is it mine?

64 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.

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:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

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

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

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-327USprimaryCWE-327US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Satheesh575555/linux-4.19.72_CVE-2021-45485Satheesh575555/linux-4.19.72_CVE-2021-45485PoC · poc_in_github

affected products (64)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Broadcom Brocade Switchall versionscert_bundDEcpe:/h:brocade:switch:-
HPE Switchall versionscert_bundDEcpe:/h:hp:switch:-
HPE Switch Fibre Channelall versionscert_bundDEcpe:/h:hp:switch:fibre_channel
HPE Switch SANall versionscert_bundDEcpe:/h:hp:switch:san_switch
IBM DataPower Gateway 10.5.0all versionscert_bundDEcpe:/a:ibm:datapower_gateway:10.5.0
IBM FlashSystemall versionscert_bundDEcpe:/a:ibm:flashsystem:-
IBM MQ Applianceall versionscert_bundDEcpe:/a:ibm:mq:appliance
IBM Power Hardware Management Consoleall versionscert_bundDEcpe:/a:ibm:hardware_management_console:-
IBM SAN Volume Controllerall versionscert_bundDEcpe:/a:ibm:san_volume_controller:-
IBM Spectrum Protect 10.1all versionscert_bundDEcpe:/a:ibm:spectrum_protect:10.1
IBM Spectrum Protect 8.1all versionscert_bundDEcpe:/a:ibm:spectrum_protect:8.1
IBM Storwizeall versionscert_bundDEcpe:/a:ibm:storwize:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenShiftall versionscert_bundDEcpe:/a:redhat:openshift:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
ООО "Открытая мобильная платформа" ОС Аврора≤ 4.0.2fstec_bduRU

showing 20 of 64

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0232Linux Kernel: Mehrere Schwachstellen ermöglichen Offenlegung von InformationenDeutsch2021-12-26csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Informationen offenzulegen.
WID-SEC-W-2022-0515IBM Spectrum Protect: Mehrere SchwachstellenDeutsch2022-06-29csaf · 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, vertrauliche Informationen offenzulegen, beliebigen Code auszuführen, seine Rechte zu erweitern oder beliebigen Code mit Root-Rechten auszuführen.
WID-SEC-W-2023-1969HPE Fabric OS: Mehrere Schwachstellen ermöglichen PrivilegieneskalationDeutsch2023-08-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HPE Fabric OS für HPE Fibre Channel und SAN Switches ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2021-12-25modified 2026-08-05

related (918)

Related entries.

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+913 more

references (39)

External citations — patches, advisories, analysis.

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