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URL: https://nvd.nist.gov/vuln/detail/CVE-2020-26147

⇱ NVD - CVE-2020-26147

  1. Vulnerabilities

CVE-2020-26147 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2021/05/11/12 CVE, MITRE Mailing List  Patch  Third Party Advisory 
https://cert-portal.siemens.com/productcert/html/ssa-019200.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-913875.html siemens-SADP
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf CVE, MITRE Third Party Advisory 
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md CVE, MITRE Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html CVE, MITRE Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html CVE, MITRE Mailing List  Third Party Advisory 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu CVE, MITRE Third Party Advisory 
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 CVE, MITRE Third Party Advisory 
https://www.fragattacks.com CVE, MITRE Product 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-Other Other 👁 cwe source acceptance level
NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

12 change records found show changes

CVE Modified by siemens-SADP 6/16/2026 11:07:42 PM

Action Type Old Value New Value
Added Affected Record truncated, showing 2048 of 17957 characters.
View Entire Change Record
[{"vendor":"Siemens","product":"SCALANCE W1748-1 M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W1748-1 M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W1788-1 M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W1788-2 EEC M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W1788-2 M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W1788-2IA M12","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V3.0.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W721-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W721-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W721-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W721-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W722-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom","status":"affected"}]},{"vendor":"Siemens","product":"SCALANCE W722-1 RJ45","defaultStatus":"unknown","versions":[{"version":"0","lessThan":"V6.6.0","versionType":"custom",

CVE Modified by MITRE 6/16/2026 11:07:42 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

CVE Modified by siemens-SADP 4/14/2026 6:16:18 AM

Action Type Old Value New Value
Added Reference 
https://cert-portal.siemens.com/productcert/html/ssa-019200.html
Added Reference 
https://cert-portal.siemens.com/productcert/html/ssa-913875.html

CVE Modified by CVE 11/21/2024 12:19:22 AM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/05/11/12
Added Reference 
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
Added Reference 
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
Added Reference 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
Added Reference 
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
Added Reference 
https://www.fragattacks.com

CVE Modified by MITRE 5/14/2024 2:53:31 AM

Action Type Old Value New Value

Reanalysis by NIST 7/12/2022 1:14:47 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:o:linux:linux_kernel:5.8.9:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4 up to (excluding) 4.4.271
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.9 up to (excluding) 4.9.271
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14 up to (excluding) 4.14.235
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19 up to (excluding) 4.19.193
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.4 up to (excluding) 5.4.124
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.42
 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.9

Modified Analysis by NIST 12/03/2021 10:09:06 PM

Action Type Old Value New Value
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:arista:c-65_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:arista:c-65:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:arista:c-75_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:arista:c-75:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:arista:o-90_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:arista:o-90:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:arista:w-68_firmware:-:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:arista:w-68:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:siemens:scalance_w1700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:siemens:scalance_w1700_ieee_802.11ac:-:*:*:*:*:*:*:*
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:siemens:scalance_w700_ieee_802.11n:-:*:*:*:*:*:*:*
Added CPE Configuration 
OR
 *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Changed Reference Type 
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf No Types Assigned


 
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory
Changed Reference Type 
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html No Types Assigned


 
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List, Third Party Advisory
Changed Reference Type 
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html No Types Assigned


 
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory
Changed Reference Type 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu No Types Assigned


 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
Changed Reference Type 
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 No Types Assigned


 
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory

CVE Modified by MITRE 10/28/2021 11:15:07 AM

Action Type Old Value New Value
Added Reference 
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu [No Types Assigned]
Added Reference 
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 [No Types Assigned]

CVE Modified by MITRE 7/13/2021 9:15:08 AM

Action Type Old Value New Value
Added Reference 
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf [No Types Assigned]

CVE Modified by MITRE 6/22/2021 10:15:09 PM

Action Type Old Value New Value
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html [No Types Assigned]
Added Reference 
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html [No Types Assigned]

Initial Analysis by NIST 5/28/2021 3:08:18 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
Added CVSS V2 
NIST (AV:A/AC:H/Au:N/C:P/I:P/A:N)
Added CWE 
NIST NVD-CWE-Other
Added CPE Configuration 
OR
 *cpe:2.3:o:linux:linux_kernel:5.8.9:*:*:*:*:*:*:*
Changed Reference Type 
http://www.openwall.com/lists/oss-security/2021/05/11/12 No Types Assigned


 
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List, Patch, Third Party Advisory
Changed Reference Type 
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md No Types Assigned


 
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
Changed Reference Type 
https://www.fragattacks.com No Types Assigned


 
https://www.fragattacks.com Product
Added CVSS V2 Metadata 
Victim must voluntarily interact with attack mechanism

CVE Modified by MITRE 5/11/2021 5:15:07 PM

Action Type Old Value New Value
Added Reference 
http://www.openwall.com/lists/oss-security/2021/05/11/12 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2020-26147
NVD Published Date:
05/11/2021
NVD Last Modified:
06/16/2026
Source:
MITRE