CVE-2018-21028

Name: CVE-2018-21028
Creator: NVD / NIST
Published: 2019-10-11T20:15:16.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.07%

Last modified Jun 17, 2026

CVE-2018-21028 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Boa through 0.94.14rc21 allows remote attackers to trigger a memory leak because of missing calls to the free function.. EPSS estimates a 2.07% chance of exploitation in the next 30 days.

Description

Boa through 0.94.14rc21 allows remote attackers to trigger a memory leak because of missing calls to the free function.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.07%

79.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-772

Affected Software

Vendor	Product	Versions
Boa	Boa	<= 0.94.14.21

References

https://github.com/gpg/boa/pull/1Third Party Advisory
https://github.com/gpg/boa/pull/1/commits/e139b87835994d007fbd64eead6c1455d7b8cf4ePatch, Third Party Advisory
https://github.com/gpg/boa/pull/1Third Party Advisory
https://github.com/gpg/boa/pull/1/commits/e139b87835994d007fbd64eead6c1455d7b8cf4ePatch, Third Party Advisory

Timeline

Published: Oct 11, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-21028?

Boa through 0.94.14rc21 allows remote attackers to trigger a memory leak because of missing calls to the free function.

How severe is CVE-2018-21028?

CVE-2018-21028 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.07% probability of exploitation in the next 30 days.

How do I fix CVE-2018-21028?

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-2018-21028?

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

Scan your code now

Source: NVD / NIST