How severe is CVE-2019-13377?

CVE-2019-13377 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-13377 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-2019-13377?

CVE-2019-13377 primarily affects W1.fi Hostapd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-13377?

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

When was CVE-2019-13377 published?

CVE-2019-13377 was published on 2019-08-15 and last updated on 2026-06-17.

CVE-2019-13377

CVE-2019-13377 is a medium-severity vulnerability in W1.fi Hostapd with a CVSS 3.x base score of 5.9. 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: W1.fi Hostapd
Published: 2019-08-15
Last modified: 2026-06-17

Description

The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.

Frequently asked questions

What is CVE-2019-13377?: The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.
How severe is CVE-2019-13377?: CVE-2019-13377 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-13377 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-2019-13377?: CVE-2019-13377 primarily affects W1.fi Hostapd. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-13377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13377 published?: CVE-2019-13377 was published on 2019-08-15 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in W1.fi Hostapd

CVE-2022-23304 — Critical (CVSS 9.8): The implementations of EAP-pwd in hostapd before 2.10 and wpa_supplicant before 2.10 are vulnerable to side-channel…
CVE-2022-23303 — Critical (CVSS 9.8): The implementations of SAE in hostapd before 2.10 and wpa_supplicant before 2.10 are vulnerable to side channel attacks…
CVE-2019-9499 — High (CVSS 8.1): The implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit…
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…

All CVEs affecting W1.fi Hostapd →

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