CVE-2021-45917: The server-request receiver function of Shockwall system has an improper authentication vulnerability

Q: How do I fix CVE-2021-45917?

network computer terminal protection system firmware: upgrade to 7.20.0401. Exact commands for each OS are on this page.

Q: Is CVE-2021-45917 being exploited?

CVE-2021-45917 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-2021-45917 affect?

CVE-2021-45917 affects network computer terminal protection system firmware. Severity is high (CVSS 8.0). The server-request receiver function of Shockwall system has an improper authentication vulnerability. An authenticated attacker of an agent computer within the local area network can use the local registry information to launch server-side

Routine

HIGH 8.0UPGRADE

CVE-2021-45917 is a high-severity flaw (CVSS 8.0) affecting network computer terminal protection system firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The server-request receiver function of Shockwall system has an improper authentication vulnerability. An authenticated attacker of an agent computer within the local area network can use the local registry information to launch server-side request forgery (SSRF) attack on another agent computer, resulting in arbitrary code execution for controlling the system or disrupting service.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-287
Published	2022-01-03
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: sun moon jingyao

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

Am I affected?

Timeline

2022-01-03 10:15 UTCPublished CVE record published
2026-06-17 04:14 UTCUpdated Record last modified

sun moon jingyao network computer terminal protection system firmware UPGRADE

Affected: < 7.20.0401

Fixed in: 7.20.0401

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-2021-45917?

network computer terminal protection system firmware: upgrade to 7.20.0401. Exact commands for each OS are on this page.

Is CVE-2021-45917 being exploited?

CVE-2021-45917 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-2021-45917 affect?

CVE-2021-45917 affects network computer terminal protection system firmware. Severity is high (CVSS 8.0). The server-request receiver function of Shockwall system has an improper authentication vulnerability. An authenticated attacker of an agent computer within the local area network can use the local registry information to launch server-side

How urgent is CVE-2021-45917?

Priority 38/100. High severity

References

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