CVE-2021-30172: Special characters of picture preview page in the Quan-Fang-Wei-Tong-Xun system are not filtered in users’ inp

Routine

MEDIUM 4.6DOWNGRADE

CVE-2021-30172 is a medium-severity flaw (CVSS 4.6) affecting omnidirectional communication system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Special characters of picture preview page in the Quan-Fang-Wei-Tong-Xun system are not filtered in users’ input, which allow remote authenticated attackers can inject malicious JavaScript and carry out Reflected XSS (Cross-site scripting) attacks, additionally access and manipulate customer’s information.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-05-07
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2021-05-07 10:15 UTCPublished CVE record published
2026-06-17 03:49 UTCUpdated Record last modified

junhetec omnidirectional communication system DOWNGRADE

Affected: 2007.1901

Fixed in: no fixed release known

Safe to downgrade to: a release before 2007.1901

1. Check installed version

apt-cache policy omnidirectional-communication-system || rpm -q omnidirectional-communication-system || omnidirectional-communication-system --version

2. No fixed release: DOWNGRADE to a release before 2007.1901 (Debian / Ubuntu)

apt-cache madison omnidirectional-communication-system sudo apt install omnidirectional-communication-system=<VERSION_BEFORE_2007.1901> sudo apt-mark hold omnidirectional-communication-system

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

dnf --showduplicates list omnidirectional-communication-system sudo dnf downgrade omnidirectional-communication-system-<VERSION_BEFORE_2007.1901> sudo dnf versionlock add omnidirectional-communication-system

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-2021-30172?

omnidirectional communication system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-30172 being exploited?

CVE-2021-30172 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-2021-30172 affect?

CVE-2021-30172 affects omnidirectional communication system. Severity is medium (CVSS 4.6). Special characters of picture preview page in the Quan-Fang-Wei-Tong-Xun system are not filtered in users’ input, which allow remote authenticated attackers can inject malicious JavaScript and carry out Reflected XSS (Cross-site scripting)

How urgent is CVE-2021-30172?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2021-30173 MEDIUM 6.5 DOWNGRADE Local File Inclusion vulnerability of the omni-directional communication system allows remote authenticated at

References

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