CVE-2017-16637: In Vectura Perfect Privacy VPN Manager v1.10.10 and v1.10.11, when resetting the network data via the software

Routine

MEDIUM 4.4DOWNGRADE

CVE-2017-16637 is a medium-severity flaw (CVSS 4.4) affecting vpn manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Vectura Perfect Privacy VPN Manager v1.10.10 and v1.10.11, when resetting the network data via the software client, with a running VPN connection, a critical error occurs which leads to a "FrmAdvancedProtection" crash. Although the mechanism malfunctions and an error occurs during the runtime with the stack trace being issued, the software process is not properly terminated. The software client is still attempting to maintain the connection ev

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-11-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: perfect-privacy

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-11-06 22:29 UTCPublished CVE record published
2026-06-17 01:09 UTCUpdated Record last modified

perfect-privacy vpn manager DOWNGRADE

Affected: 1.10.10 · 1.10.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10.10

1. Check installed version

apt-cache policy vpn-manager || rpm -q vpn-manager || vpn-manager --version

2. No fixed release: DOWNGRADE to a release before 1.10.10 (Debian / Ubuntu)

apt-cache madison vpn-manager sudo apt install vpn-manager=<VERSION_BEFORE_1.10.10> sudo apt-mark hold vpn-manager

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vpn-manager sudo dnf downgrade vpn-manager-<VERSION_BEFORE_1.10.10> sudo dnf versionlock add vpn-manager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-16637?

vpn manager: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-16637 being exploited?

CVE-2017-16637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-16637 affect?

CVE-2017-16637 affects vpn manager. Severity is medium (CVSS 4.4). In Vectura Perfect Privacy VPN Manager v1.10.10 and v1.10.11, when resetting the network data via the software client, with a running VPN connection, a critical error occurs which leads to a "FrmAdvancedProtection" crash. Although the mecha

How urgent is CVE-2017-16637?

Priority 20/100. No elevated risk signals yet.

References

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