Authentication bypass via mismatched PMKSA cache selection
Published Sep 11, 2026 · Updated Sep 11, 2026
Authentication bypass in wpa_supplicant before 2.12 allows attackers to reuse an unrelated PMKSA entry during wireless association. In wpa.c, the driver-based PMKSA selection path accepts a cache entry without matching its network context and AKMP to the target network. Exploitation requires a misbehaving access point and a valid credential for any configured network; WPA3-Personal targets using SAE are unaffected.
Summary
What happened
Authentication bypass in wpa_supplicant before 2.12 allows attackers to reuse an unrelated PMKSA entry during wireless association. In wpa.c, the driver-based PMKSA selection path accepts a cache entry without matching its network context and AKMP to the target network. Exploitation requires a misbehaving access point and a valid credential for any configured network; WPA3-Personal targets using SAE are unaffected.
The record
- CVE
- CVE-2026-78807
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1557
- Attack vector
- adjacent
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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