← Vulnerability feed

Vulnerability record · CVE-2020-28951 · published 19 November 2020

CVE-2020-28951: Openwrt use after free vulnerability

Openwrt · Openwrt

libuci in OpenWrt before 18.06.9 and 19.x before 19.07.5 may encounter a use after free when using malicious package names. This is related to uci_parse_package in file.c and uci_strdup in util.c.

9.8 CVSS 3.1 Critical EPSS 1.8% · top 22.7% CWE-416 · Use after free
9.8CVSS 3.1 base score, v2 10.0
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

libuci in OpenWrt before 18.06.9 and 19.x before 19.07.5 may encounter a use after free when using malicious package names. This is related to uci_parse_package in file.c and uci_strdup in util.c.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=commit%3Bh=5625f5bc36954d644cb80adf8de47854c65d91c3
https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=log%3Bh=refs/tags/v18.06.9
https://git.openwrt.org/?p=project/uci.git%3Ba=commit%3Bh=a3e650911f5e6f67dcff09974df3775dfd615da6
https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=commit%3Bh=5625f5bc36954d644cb80adf8de47854c65d91c3
https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=log%3Bh=refs/tags/v18.06.9
https://git.openwrt.org/?p=project/uci.git%3Ba=commit%3Bh=a3e650911f5e6f67dcff09974df3775dfd615da6

Track CVE-2020-28951 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-20681Mediatek software development kit out-of-bounds write vulnerabilityIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with Us…EPSS 0.54%9.8CVE-2025-20682Mediatek software development kit out-of-bounds write vulnerabilityIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with Us…EPSS 0.48%9.8CVE-2025-20683Mediatek software development kit out-of-bounds write vulnerabilityIn wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with Us…EPSS 0.48%9.8CVE-2025-20674Openwrt incorrect authorization vulnerabilityIn wlan AP driver, there is a possible way to inject arbitrary packet due to a missing permission check. This could lead to remote escalation of priv…EPSS 0.77%9.8CVE-2025-20654Mediatek software development kit out-of-bounds write vulnerabilityIn wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no additiona…EPSS 0.81%9.8CVE-2024-20017MediaTek wlan service out-of-bounds write allows remote code executionThe MediaTek wlan service fails to properly validate input, leading to an out-of-bounds write. This flaw can be triggered remotely without authentica…EPSS 47%analysed9.6CVE-2026-62948Openwrt cross-site scripting vulnerabilityOpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odh…EPSS 0.58%9.5CVE-2026-30871Openwrt stack-based buffer overflow vulnerabilityOpenWrt Project is a Linux operating system targeting embedded devices. In versions prior to 24.10.6 and 25.12.1, the mdns daemon has a Stack-based B…EPSS 0.67%

Source: NIST National Vulnerability Database (record CVE-2020-28951), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.