How severe is CVE-2016-6586?

CVE-2016-6586 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2016-6586 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6586?

CVE-2016-6586 affects Symantec Norton Mobile Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-6586?

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

When was CVE-2016-6586 published?

CVE-2016-6586 was published on 2020-01-08 and last updated on 2026-06-17.

CVE-2016-6586

CVE-2016-6586 is a low-severity vulnerability in Symantec Norton Mobile Security with a CVSS 3.x base score of 3.7. 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-20.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 4.3
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Symantec Norton Mobile Security
Published: 2020-01-08
Last modified: 2026-06-17

Description

A security bypass vulnerability exists in Symantec Norton Mobile Security for Android before 3.16, which could let a malicious user conduct a man-in-the-middle via specially crafted JavaScript to add arbitrary URLs to the URL whitelist.

Frequently asked questions

What is CVE-2016-6586?: A security bypass vulnerability exists in Symantec Norton Mobile Security for Android before 3.16, which could let a malicious user conduct a man-in-the-middle via specially crafted JavaScript to add arbitrary URLs to the URL whitelist.
How severe is CVE-2016-6586?: CVE-2016-6586 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2016-6586 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6586?: CVE-2016-6586 affects Symantec Norton Mobile Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-6586?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6586 published?: CVE-2016-6586 was published on 2020-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:symantec:norton_mobile_security:*:*:*:*:*:android:*:*

More vulnerabilities in Symantec Norton Mobile Security

CVE-2016-6587 — Medium (CVSS 5.5): An Information Disclosure vulnerability exists in the mid.dat file stored on the SD card in Symantec Norton Mobile…
CVE-2016-6585 — Medium (CVSS 5.3): A Denial of Service vulnerability exists in Symantec Norton Mobile Security for Android prior to 3.16, which could let…

All CVEs affecting Symantec Norton Mobile Security →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →