CVE-2021-4160

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.77% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 89.1% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-01-28 21:28Z4 YR AGO

Last updated

2024-09-16 23:51Z1 YR AGO

Reserved

2021-12-23

Assigning CNA

openssl

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass

Data version

5.1

Document digest

3a74b22dd6806606b3f2f8898a5962c77f4d24be1940a6c70aa3cc1ae068e86f

• www.openssl.orghttps://www.openssl.org/news/secadv/20220128.txt
• git.openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3bf7b73ea7123045b8f972badc67ed6878e6c37f
• git.openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=e9e726506cd2a3fd9c0f12daf8cc1fe934c7dddb
• git.openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=6fc1aaaf303185aa5e483e06bdfae16daa9193a7
• www.debian.orgDSA-5103https://www.debian.org/security/2022/dsa-5103vendor-advisory
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.html
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
• security.gentoo.orgGLSA-202210-02https://security.gentoo.org/glsa/202210-02vendor-advisory
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20240621-0006/