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CVE-2020-24586

LOW
3.5
CVSS Score
Published: May 11, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:05 AM UTC
44 products affected across 5 vendorsLinux KernelDebian LinuxAc 9560 Firmware

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Severity
LOW3.5
Exploit prediction
EPSS 6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

C 200 Firmware· Arista
95%
v < 11.0.0-36
Affected range stops below 11.0.0-36, so it looks safe — our inference, not a vendor statement
arista-c-200 (same device)
C 230 Firmware· Arista
95%
v < 10.0.1-31
Affected range stops below 10.0.1-31, so it looks safe — our inference, not a vendor statement
arista-c-230 (same device)
C 235 Firmware· Arista
95%
v < 10.0.1-31
Affected range stops below 10.0.1-31, so it looks safe — our inference, not a vendor statement
arista-c-235 (same device)
C 250 Firmware· Arista
95%
v < 10.0.1-31
Affected range stops below 10.0.1-31, so it looks safe — our inference, not a vendor statement
arista-c-250 (same device)
C 260 Firmware· Arista
95%
v < 10.0.1-31
Affected range stops below 10.0.1-31, so it looks safe — our inference, not a vendor statement
arista-c-260 (same device)
Debian Linux· Debiandrupal
95%
9.0
IEEE 802.11· Ieee
95%
All versions
Ac 3165 Firmware· Intel
95%
v < 19.51.33.1
Affected range stops below 19.51.33.1, so it looks safe — our inference, not a vendor statement
intel-ac-3165 (same device)
Ac 3168 Firmware· Intel
95%
v < 19.51.33.1
Affected range stops below 19.51.33.1, so it looks safe — our inference, not a vendor statement
intel-ac-3168 (same device)
Ac 7265 Firmware· Intel
95%
v < 19.51.33.1
Affected range stops below 19.51.33.1, so it looks safe — our inference, not a vendor statement
intel-ac-7265 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/05/11/12
Third Party Advisory
Source: [email protected]
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
Mailing List
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
Third Party Advisory
Source: [email protected]
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
ExploitThird Party Advisory
Source: [email protected]
https://www.fragattacks.com

CVSS

3.5LOW[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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