CVE-2020-9283

mediumpriority · attend · 47EPSS 0.209 · 98 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

20.9% (98th) EPSS

CVSS 5 · medium

Is it mine?

31 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.

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

v3.17.5highAV: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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USprimaryCWE-347USCWE-347US

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-48121Go SSH servers 0.0.2 - Denial of Service (PoC)PoC · exploit_db
brompwnie/CVE-2020-9283Exploit for CVE-2020-9283 based on Go PoC · poc_in_github

affected products (31)

Products and version ranges known to be affected.

IBM DB2all versionscert_bundDEcpe:/a:ibm:db2:-
IBM DB2 On Openshift <11.5.7.0-cn5all versionscert_bundDE
IBM DB2 on Cloud Pak for Data <4.5.0all versionscert_bundDE
IBM MQall versionscert_bundDEcpe:/a:ibm:mq:-
IBM DB2≤ On Openshift <11.5.7.0-cn5cert_bundDE
IBM DB2≤ on Cloud Pak for Data <4.5.0cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 16.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 18.04 LTSfstec_bduRU
Red Hat, Inc. Openshift Service Mesh≤ 1.0fstec_bduRU
Red Hat, Inc. Openshift Service Mesh≤ 1.1fstec_bduRU
Red Hat, Inc. Red Hat 3scale API Management Platform≤ 2.10 on RHEL 7fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Container Platform≤ 4fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Container Platform≤ 4.5fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Container Platform≤ 4.4fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Container Platform≤ 4.3fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Container Platform≤ 4.6fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Virtualization≤ 1fstec_bduRU
Red Hat, Inc. Red Hat OpenShift Virtualization≤ 2fstec_bduRU
Red Hat, Inc. Red Hat Openshift Container Storage≤ 4fstec_bduRU

showing 20 of 31

advisories (3)

Vendor and ecosystem advisories describing this.

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.
GHSA-ffhg-7mh4-33c4Improper Verification of Cryptographic Signature in golang.org/x/crypto2021-05-18ghsa · osvUS
golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.
GO-2020-0012Panic due to improper verification of cryptographic signatures in golang.org/x/crypto/ssh2021-04-14vendor · osvUS
An attacker can craft an ssh-ed25519 or sk-ssh-ed25519@openssh.com public key, such that the library will panic when trying to verify a signature with it. If verifying signatures using user supplied public keys, this may be used as a denial of service vector.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund NVD CVE.org MITRE

published 2020-02-20modified 2026-10-09

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+1043 more

references (44)

External citations — patches, advisories, analysis.

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