CVE-2020-14315

Name: CVE-2020-14315
Creator: NVD / NIST
Published: 2020-09-16T14:15:12.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.53%

Last modified Jun 17, 2026

CVE-2020-14315 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.. EPSS estimates a 2.53% chance of exploitation in the next 30 days.

Description

A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.

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

2.53%

82.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Daemonology	Bsdiff	4.3

References

https://bugzilla.redhat.com/show_bug.cgi?id=1856747Issue Tracking, Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/09/2Mailing List, Third Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/Exploit, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1856747Issue Tracking, Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/09/2Mailing List, Third Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/Exploit, Third Party Advisory

Timeline

Published: Sep 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14315?

How severe is CVE-2020-14315?

CVE-2020-14315 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14315?

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-2020-14315?

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

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Source: NVD / NIST