CVE-2020-3929: GeoVision Door Access Control device family employs shared cryptographic private keys for SSH and HTTPS

Q: How do I fix CVE-2020-3929?

geovision gv-as210 firmware: upgrade to 2.21; geovision gv-as410 firmware: upgrade to 2.21; geovision gv-as810 firmware: upgrade to 2.21. Exact commands for each OS are on this page.

Q: Is CVE-2020-3929 being exploited?

CVE-2020-3929 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-3929 affect?

CVE-2020-3929 affects geovision gv-as210 firmware, geovision gv-as410 firmware, geovision gv-as810 firmware. Severity is medium (CVSS 5.9). GeoVision Door Access Control device family employs shared cryptographic private keys for SSH and HTTPS. Attackers may conduct MITM attack with the derived keys and plaintext recover of encrypted messages.

Q: How urgent is CVE-2020-3929?

Priority 36/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADEUPGRADEUPGRADE

CVE-2020-3929 is a medium-severity flaw (CVSS 5.9) affecting geovision gv-as210 firmware, geovision gv-as410 firmware, geovision gv-as810 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GeoVision Door Access Control device family employs shared cryptographic private keys for SSH and HTTPS. Attackers may conduct MITM attack with the derived keys and plaintext recover of encrypted messages.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-326
Published	2020-06-12
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: usavisionsys

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

Am I affected?

Timeline

2020-06-12 09:15 UTCPublished CVE record published
2026-06-17 03:19 UTCUpdated Record last modified

usavisionsys geovision gv-as210 firmware UPGRADE

Affected: < 2.21

Fixed in: 2.21

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

usavisionsys geovision gv-as410 firmware UPGRADE

Affected: < 2.21

Fixed in: 2.21

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

usavisionsys geovision gv-as810 firmware UPGRADE

Affected: < 2.21

Fixed in: 2.21

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

usavisionsys geovision gv-as1010 firmware UPGRADE

Affected: < 1.32

Fixed in: 1.32

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

usavisionsys geovision gv-gf192x firmware UPGRADE

Affected: < 1.10

Fixed in: 1.10

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2020-3929?

geovision gv-as210 firmware: upgrade to 2.21; geovision gv-as410 firmware: upgrade to 2.21; geovision gv-as810 firmware: upgrade to 2.21. Exact commands for each OS are on this page.

Is CVE-2020-3929 being exploited?

CVE-2020-3929 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-2020-3929 affect?

CVE-2020-3929 affects geovision gv-as210 firmware, geovision gv-as410 firmware, geovision gv-as810 firmware. Severity is medium (CVSS 5.9). GeoVision Door Access Control device family employs shared cryptographic private keys for SSH and HTTPS. Attackers may conduct MITM attack with the derived keys and plaintext recover of encrypted messages.

How urgent is CVE-2020-3929?

Priority 36/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-3928 MEDIUM 6.2 UPGRADE UPGRADE GeoVision Door Access Control device family is hardcoded with a root password, which adopting an identical pas

References

← Back to latest CVEs