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Vulnerability record · CVE-2020-26144 · published 11 May 2021

CVE-2020-26144: Samsung galaxy i9305 firmware improper input validation vulnerability

Samsung · Galaxy I9305 Firmware

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042 (i.e., LLC/SNAP) header for EAPOL. An adversary can abuse this to inject arbitrary network packets independent of the network configuration.

6.5 CVSS 3.1 Medium EPSS 4.9% · top 8.2% CWE-20 · Improper input validation
6.5CVSS 3.1 base score, v2 3.3
4.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
18Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042 (i.e., LLC/SNAP) header for EAPOL. An adversary can abuse this to inject arbitrary network packets independent of the network configuration.

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

Affected products

18 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-26144), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.