CVE-2020-15859

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.5% of scored records. A rank, not a probability.

NVD base score

3.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-07-21 15:25Z6 YR AGO

Last updated

2024-08-04 13:30Z2 YR AGO

Reserved

2020-07-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

7b4fe34a736d4d83888edc4002a0db7fccebbab24b2c7a2e07aa62ef09f7d5a0

• bugs.launchpad.nethttps://bugs.launchpad.net/qemu/+bug/1886362x_refsource_MISC
• lists.gnu.orghttps://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.htmlx_refsource_MISC
• www.openwall.com[oss-security] 20200721 CVE-2020-15859 QEMU: net: e1000e: use-after-free while sending packetshttps://www.openwall.com/lists/oss-security/2020/07/21/3mailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20210218 [SECURITY] [DLA 2560-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlmailing-listx_refsource_MLIST
• security.gentoo.orgGLSA-202208-27https://security.gentoo.org/glsa/202208-27vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlmailing-listx_refsource_MLIST