CVE-2020-24586

Exp

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.

Published: 2021-05-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-24586 is rated Exploit Available (58.2/100): CVSS Low severity, with medium exploitation likelihood (EPSS 1.50%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-24586

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-24586

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-04 0.63% 1.50% +0.87%
2 2026-04-03 0.54% 0.63% +0.09%
3 2026-03-04 — 0.54% —

Full EPSS history (54 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-24586

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
3.5 3.1 LOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 1.4 [email protected]
2.9 2.0 LOW
AV:A/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 5.5 2.9 [email protected]

Weakness enumeration for CVE-2020-24586

OS Trackers for CVE-2020-24586

vendor priority summary link
debian not yet assigned CVE-2020-24586 not yet assigned priority: Debian including 2 source packages (firmware-nonfree, linux), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 9, open 1. https://security-tracker.debian.org/tracker/CVE-2020-24586
redhat medium — https://access.redhat.com/security/cve/CVE-2020-24586
suse medium — https://www.suse.com/security/cve/CVE-2020-24586/
ubuntu medium CVE-2020-24586 medium priority: Ubuntu including 169 source packages (linux, linux-allwinner, …), 2181 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1696, released 218, not-affected 217, ignored 45, needed 5. https://ubuntu.com/security/CVE-2020-24586

Affected software / configurations for CVE-2020-24586

Vendor Product Version Raw CPE
ieee ieee_802.11 — cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
linux mac80211 — cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
arista c-250_firmware < 10.0.1-31 cpe:2.3:o:arista:c-250_firmware:*:*:*:*:*:*:*:*
arista c-260_firmware < 10.0.1-31 cpe:2.3:o:arista:c-260_firmware:*:*:*:*:*:*:*:*
arista c-230_firmware < 10.0.1-31 cpe:2.3:o:arista:c-230_firmware:*:*:*:*:*:*:*:*
arista c-235_firmware < 10.0.1-31 cpe:2.3:o:arista:c-235_firmware:*:*:*:*:*:*:*:*
arista c-200_firmware < 11.0.0-36 cpe:2.3:o:arista:c-200_firmware:*:*:*:*:*:*:*:*
intel ax210_firmware < 22.30.0.11 cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*
intel ax201_firmware < 22.30.0.11 cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
intel ax200_firmware < 22.30.0.11 cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
intel ac_9560_firmware < 22.30.0.11 cpe:2.3:o:intel:ac_9560_firmware:*:*:*:*:*:*:*:*
intel ac_9462_firmware < 22.30.0.11 cpe:2.3:o:intel:ac_9462_firmware:*:*:*:*:*:*:*:*
intel ac_9461_firmware < 22.30.0.11 cpe:2.3:o:intel:ac_9461_firmware:*:*:*:*:*:*:*:*
intel ac_9260_firmware < 22.30.0.11 cpe:2.3:o:intel:ac_9260_firmware:*:*:*:*:*:*:*:*
intel ac_8265_firmware < 20.70.21.2 cpe:2.3:o:intel:ac_8265_firmware:*:*:*:*:*:*:*:*
intel ac_8260_firmware < 20.70.21.2 cpe:2.3:o:intel:ac_8260_firmware:*:*:*:*:*:*:*:*
intel ac_3168_firmware < 19.51.33.1 cpe:2.3:o:intel:ac_3168_firmware:*:*:*:*:*:*:*:*
intel ac_7265_firmware < 19.51.33.1 cpe:2.3:o:intel:ac_7265_firmware:*:*:*:*:*:*:*:*
intel ac_3165_firmware < 19.51.33.1 cpe:2.3:o:intel:ac_3165_firmware:*:*:*:*:*:*:*:*
intel ax1675_firmware — cpe:2.3:o:intel:ax1675_firmware:-:*:*:*:*:*:*:*
intel ax1650_firmware — cpe:2.3:o:intel:ax1650_firmware:-:*:*:*:*:*:*:*
intel ac_1550_firmware — cpe:2.3:o:intel:ac_1550_firmware:-:*:*:*:*:*:*:*
linux linux_kernel >= 4.4, < 4.4.271 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.9, < 4.9.271 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.14, < 4.14.235 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.19, < 4.19.193 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.4, < 5.4.124 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.10, < 5.10.42 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.12, < 5.12.9 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

References for CVE-2020-24586

URL Tags
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
https://www.fragattacks.com Exploit Third Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html Third Party Advisory
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