CVE-2020-15859

Name: CVE-2020-15859
Creator: NVD / NIST
Published: 2020-07-21T16:15:11.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2020-15859 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.

Metrics

CVSS 3.1

3.3/10

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

EPSS Probability

0.44%

34.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Qemu	Qemu	4.2.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://bugs.launchpad.net/qemu/+bug/1886362Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.htmlMailing List, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/21/3Mailing List, Patch, Third Party Advisory
https://bugs.launchpad.net/qemu/+bug/1886362Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.htmlMailing List, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/21/3Mailing List, Patch, Third Party Advisory

Timeline

Published: Jul 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15859?

QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.

How severe is CVE-2020-15859?

CVE-2020-15859 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15859?

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-2020-15859?

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

Scan your code now

Source: NVD / NIST