CVE-2020-26146

Name: CVE-2020-26146
Creator: NVD / NIST
Published: 2021-05-11T20:15:08.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 5.62%

Last modified Jun 17, 2026

CVE-2020-26146 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. EPSS estimates a 5.62% chance of exploitation in the next 30 days.

Description

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

5.62%

92.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samsung	Galaxy I9305 Firmware	4.4.4
Arista	C-250 Firmware	< 10.0.1-31
Arista	C-260 Firmware	< 10.0.1-31
Arista	C-230 Firmware	< 10.0.1-31
Arista	C-235 Firmware	< 10.0.1-31
Arista	C-200 Firmware	< 11.0.0-36
Arista	C-120 Firmware	< 11.0.0-36
Arista	C-130 Firmware	< 11.0.0-36
Arista	C-100 Firmware	< 11.0.0-36
Arista	C-110 Firmware	< 11.0.0-36
Arista	O-105 Firmware	< 11.0.0-36
Arista	W-118 Firmware	< 11.0.0-36
Arista	C-75 Firmware	All versions
Arista	O-90 Firmware	All versions
Arista	C-65 Firmware	All versions
Arista	W-68 Firmware	All versions
Siemens	Scalance W700 Ieee 802.11n Firmware	All versions
Siemens	Scalance W1700 Ieee 802.11ac Firmware	All versions
Siemens	Scalance W1750d Firmware	< 8.7.1.3

References

http://www.openwall.com/lists/oss-security/2021/05/11/12Mailing List, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdfThird Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdThird Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWuThird Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63Third Party Advisory
https://www.fragattacks.comThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/11/12Mailing List, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdfThird Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdThird Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWuThird Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63Third Party Advisory
https://www.fragattacks.comThird Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-019200.html
https://cert-portal.siemens.com/productcert/html/ssa-913875.html

Timeline

Published: May 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26146?

How severe is CVE-2020-26146?

CVE-2020-26146 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 5.62% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26146?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26146?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST