LOW
CVE-2020-24587
CWE-327Published: May 11, 2021· Updated: Jun 17, 2026
2.6
CVSS v3.1
Official Description
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.
Technical Analysis
CVE-2020-24587 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityHigh
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Vendors & Products
arista30 product(s)
c-100 firmwarec-100c-110 firmwarec-110c-120 firmwarec-120c-130 firmwarec-130c-200 firmwarec-200c-230 firmwarec-230+18
Cisco256 product(s)
1100 firmware11001100-4p firmware1100-4p1100-8p firmware1100-8p1101-4p firmware1101-4p1109-2p firmware1109-2p1109-4p firmware1109-4p+244
Debian1 product(s)
debian linux
ieee1 product(s)
ieee 802.11
intel42 product(s)
ac 8260 firmwareac 8260ac 8265 firmwareac 8265ac 9260 firmwareac 9260ac 9560 firmwareac 9560killer ac 1550 firmwarekiller ac 1550killer wi-fi 6 ax1650 firmwarekiller wi-fi 6 ax1650+30
Linux2 product(s)
mac80211linux kernel
Source: NVD CPE · 332 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
ADVISORYhttps://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
ADVISORYhttps://www.fragattacks.com
ADVISORYhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
ADVISORYhttps://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
ADVISORYhttps://www.fragattacks.com
All References (18)
→
http://www.openwall.com/lists/oss-security/2021/05/11/12Mailing List · Third Party Advisory
→
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List · Third Party Advisory
→
→
→
https://www.fragattacks.comExploit · Third Party Advisory
→
→
http://www.openwall.com/lists/oss-security/2021/05/11/12Mailing List · Third Party Advisory
→
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdThird Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List · Third Party Advisory
Quick Facts
CVE IDCVE-2020-24587
CVSS Score2.6 / 10
SeverityLOW
WeaknessCWE-327
CISA KEVNo
Affected6 vendor(s)
PublishedMay 11, 2021
Related CVEs (CWE-327)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-24587 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.