What is CVE-2020-12046?

CVE-2020-12046 is a medium-severity vulnerability in Opto22 Softpac Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.7/10. Published 2020-05-14.

How severe is CVE-2020-12046?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Opto22 Softpac Project

CVE-2020-12046

Opto 22 SoftPAC Project Version 9.6 and prior. SoftPAC’s firmware files’ signatures are not verified upon firmware update. This allows an attacker to replace legitimate firmware files with malicious files.

Published 2020-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (37.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Opto22 Softpac Project
Opto 22 Softpac Project — versions SoftPAC Project Version 9.6 and prior

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

www.us-cert.gov/ics/advisories/icsa-20-135-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2020-12046?: CVE-2020-12046 is a medium-severity vulnerability in Opto22 Softpac Project, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.7/10. Published 2020-05-14.
How severe is CVE-2020-12046?: Medium severity. CVSS v3 base score is 5.7 out of 10.