Is CVE-2020-15679 in the CISA KEV catalog?

No. CVE-2020-15679 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-15679?

CVE-2020-15679 has a CVSS v3 base score of 7.6 (HIGH).

What is the EPSS score for CVE-2020-15679?

CVE-2020-15679 has an EPSS score of 0.47% (37th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-15679?

Upgrade vpn to 1.0.7_(929) or later.

CVE & CISA-KEV Catalog

CVE-2020-15679

HIGH

7.6

CVSS v3

NVD

Description

An OAuth session fixation vulnerability existed in the VPN login flow, where an attacker could craft a custom login URL, convince a VPN user to login via that URL, and obtain authenticated access as that user. This issue is limited to cases where attacker and victim are sharing the same source IP and could allow the ability to view session states and disconnect VPN sessions. This vulnerability affects Mozilla VPN iOS 1.0.7 < (929), Mozilla VPN Windows < 1.2.2, and Mozilla VPN Android 1.1.0 < (1360).

CWE-384

How to fix

Remediation Available

vpnNVD

Affected:>= 1.0.7, < 1.0.7_(929)Fixed in:1.0.7_(929)CVE-2020-15679derived from NVD

Affected:>= 1.1.0, < 1.1.0_(1360)Fixed in:1.1.0_(1360)CVE-2020-15679derived from NVD

Affected:< 1.0.7_(929)Fixed in:1.0.7_(929)CVE-2020-15679derived from NVD

Affected:< 1.2.2Fixed in:1.2.2CVE-2020-15679derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

0.47%probability of exploitation in 30 days

37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Patch3

Vendor Advisory1

mozilla.org

Related Vulnerabilities

Other CWE-384 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-11714	Critical	9.8	37%	-	-
CVE-2018-18925	Critical	9.8	32%	-	-
CVE-2019-12258	High	7.5	23%	-	Fix
CVE-2018-17199	High	7.5	20%	-	Fix
CVE-2019-10008	High	8.8	20%	-	-
CVE-2024-50339	Medium	5.3	20%	-	Fix

Embed a live status badge for CVE-2020-15679

Markdown

[![CVE-2020-15679](https://tridentstack.com/cve/badge/CVE-2020-15679.svg)](https://tridentstack.com/cve/CVE-2020-15679)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-15679"><img src="https://tridentstack.com/cve/badge/CVE-2020-15679.svg" alt="CVE-2020-15679"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-16.