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CVE-2020-24586

18
FAUCET Score

CVE-2020-24586 is a vulnerability in the 802.11 Wi-Fi standard affecting WPA, WPA2, WPA3, and WEP, impacting products from vendors like Arista, Debian, Intel, and Linux. It stems from the standard not requiring the clearing of received fragments from memory after reconnection, allowing for potential arbitrary packet injection or data exfiltration under specific conditions. Rated with a CVSS score of 3.5 (LOW), this vulnerability requires adjacent network access and user interaction, with a low impact on confidentiality and no impact on integrity or availability. There is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage beyond initial reporting.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
< 10.0.1-31CPE matchmatch criteria
cpe:2.3:o:arista:c-250_firmware:*:*:*:*:*:*:*:*
< 10.0.1-31CPE matchmatch criteria
cpe:2.3:o:arista:c-260_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.76%
Probability of exploitation in next 30 days
EPSS Percentile
92.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0576 is in the 100th percentile among its peer group of 18 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-348.rt7.130.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-348.el8
View patch

Vendor Advisories (1)

redhatCVE-2020-24586Moderate

kernel: Fragmentation cache not cleared on reconnection

May 12, 2021

References

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