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Medium SSA-913875 9 CVEs

SSA-913875: Frame Aggregation and Fragmentation Vulnerabilities in 802.11

Published Jul 13, 2021 · Updated Apr 14, 2026 · Revision 6

Vendor: Siemens Product: SCALANCE W1748-1 M12 (6GK5748-1GY01-0AA0) Product: SCALANCE W1748-1 M12 (6GK5748-1GY01-0TA0) Product: SCALANCE W1750D (JP) (6GK5750-2HX01-1AD0) Product: SCALANCE W1750D (ROW) (6GK5750-2HX01-1AA0) Product: SCALANCE W1750D (USA) (6GK5750-2HX01-1AB0) Product: SCALANCE W1788-1 M12 (6GK5788-1GY01-0AA0) Product: SCALANCE W1788-2 EEC M12 (6GK5788-2GY01-0TA0) Product: SCALANCE W1788-2 M12 (6GK5788-2GY01-0AA0) Product: SCALANCE W1788-2IA M12 (6GK5788-2HY01-0AA0) Product: SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AA0) Product: SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AB0) Product: SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AA0) Product: SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AB0) Product: SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AC0) Product: SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA0) Product: SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA6) Product: SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AB0) Product: SCALANCE W734-1 RJ45 (USA) (6GK5734-1FX00-0AB6) Product: SCALANCE W738-1 M12 (6GK5738-1GY00-0AA0) Product: SCALANCE W738-1 M12 (6GK5738-1GY00-0AB0) Product: SCALANCE W748-1 M12 (6GK5748-1GD00-0AA0) Product: SCALANCE W748-1 M12 (6GK5748-1GD00-0AB0) Product: SCALANCE W748-1 RJ45 (6GK5748-1FC00-0AA0) Product: SCALANCE W748-1 RJ45 (6GK5748-1FC00-0AB0) Product: SCALANCE W761-1 RJ45 (6GK5761-1FC00-0AA0) Product: SCALANCE W761-1 RJ45 (6GK5761-1FC00-0AB0) Product: SCALANCE W774-1 M12 EEC (6GK5774-1FY00-0TA0) Product: SCALANCE W774-1 M12 EEC (6GK5774-1FY00-0TB0) Product: SCALANCE W774-1 RJ45 (6GK5774-1FX00-0AA0) +38 more

Summary

Twelve vulnerabilities in the implementation of frame aggregation and fragmentation of the 802.11 standard, under the name of FragAttacks, have been published.

Successful exploitation of these vulnerabilities could allow an attacker within Wi-Fi range to forge encrypted frames, which could result in sensitive data disclosure and possibly traffic manipulation.

The advised Siemens products are only affected by some of the published vulnerabilities.

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

Vulnerabilities 9

Revision history

  1. #6

    Added fix for SCALANCE W-700 IEEE 802.11n family

  2. #5

    Clarified fix version information for SCALANCE W-700 IEEE 802.11ax family

  3. #4

    Added fix for SCALANCE W-1700 IEEE 802.11ac family

  4. #3

    Added fix for SCALANCE W-700 IEEE 802.11ax family; updated name and split into individual products the SCALANCE W-700 and SCALANCE W-1700 families; clarified that no fix is planned for SCALANCE W-700 IEEE 802.11n and SCALANCE W-1700 IEEE 802.11ac families

  5. #2

    Added fix for SCALANCE W1750D

  6. #1

    Publication Date

References