CVE-2017-13084

CVE-2017-13084 is a medium-severity vulnerability in W1.fi Hostapd with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-330.

Key facts

• Severity: Medium (CVSS 3.x base score 6.8)
• CVSS v2: 5.4
• EPSS exploit prediction: 2% (80th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-330
• Affected product: W1.fi Hostapd
• Published: 2017-10-17
• Last modified: 2026-06-17

Description

Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Station-To-Station-Link (STSL) Transient Key (STK) during the PeerKey handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames.

Frequently asked questions

What is CVE-2017-13084?

Wi-Fi Protected Access (WPA and WPA2) allows reinstallation of the Station-To-Station-Link (STSL) Transient Key (STK) during the PeerKey handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames.

How severe is CVE-2017-13084?

CVE-2017-13084 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2017-13084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-13084?

CVE-2017-13084 primarily affects W1.fi Hostapd. In total, 85 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-13084?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-13084 published?

CVE-2017-13084 was published on 2017-10-17 and last updated on 2026-06-17.

References

• http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-007.txt
• http://www.kb.cert.org/vuls/id/228519
• http://www.securityfocus.com/bid/101274
• http://www.securitytracker.com/id/1039576
• http://www.securitytracker.com/id/1039577
• http://www.securitytracker.com/id/1039581
• https://access.redhat.com/security/vulnerabilities/kracks
• https://cert-portal.siemens.com/productcert/pdf/ssa-901333.pdf
• https://security.gentoo.org/glsa/201711-03
• https://support.lenovo.com/us/en/product_security/LEN-17420
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171016-wpa
• https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt
• https://www.krackattacks.com/

Affected products (85)

• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:10:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:10.4:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:11:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd:freebsd:11.1:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:7:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:7:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.3.7:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.3.9:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.3.10:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.3.11:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.4.7:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.4.8:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.4.10:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.4.11:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.5.9:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.5.11:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.6.8:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.6.9:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.6.10:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.1:*:*:*:*:*:*:*

More vulnerabilities in W1.fi Hostapd

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• CVE-2019-9498 — High (CVSS 8.1): The implementations of EAP-PWD in hostapd EAP Server, when built against a crypto library missing explicit validation…
• CVE-2019-9497 — High (CVSS 8.1): The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element…
• CVE-2017-13082 — High (CVSS 8.1): Wi-Fi Protected Access (WPA and WPA2) that supports IEEE 802.11r allows reinstallation of the Pairwise Transient Key…

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