CVE-2020-12651

Name: CVE-2020-12651
Creator: NVD / NIST
Published: 2020-05-15T18:15:13.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.60%

Last modified Jun 17, 2026

CVE-2020-12651 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can trigger a line number to CSI functions that exceeds INT_MAX.. EPSS estimates a 6.60% chance of exploitation in the next 30 days.

Description

SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can trigger a line number to CSI functions that exceeds INT_MAX.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

6.60%

93.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Vandyke	Securecrt	< 8.7.2
Vandyke	Securecrt	< 2.4

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=2033Exploit, Third Party Advisory
https://twitter.com/taviso/status/1261079774190919680Third Party Advisory
https://www.vandyke.com/products/securecrt/history.txtRelease Notes, Vendor Advisory
https://www.vandyke.com/support/advisory/index.htmlVendor Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=2033Exploit, Third Party Advisory
https://twitter.com/taviso/status/1261079774190919680Third Party Advisory
https://www.vandyke.com/products/securecrt/history.txtRelease Notes, Vendor Advisory
https://www.vandyke.com/support/advisory/index.htmlVendor Advisory

Timeline

Published: May 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12651?

How severe is CVE-2020-12651?

CVE-2020-12651 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.60% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12651?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12651?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST