CVE & CISA-KEV Catalog

CVE-2021-20844

MEDIUM
5.7
CVSS v3
NVD

Description

Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to obtain sensitive information via a specially crafted web page.

How to fix

Remediation Available
biz box nvr510 firmwareNVD
Affected:< 15.01.18Fixed in:15.01.18CVE-2021-20844derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.93%probability of exploitation in 30 days
56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Related Vulnerabilities

Other CWE-116 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-38475Critical9.1100%KEVFix
CVE-2022-36446Critical9.896%-Fix
CVE-2021-31806Medium6.596%-Fix
CVE-2022-30781High7.588%-Fix
CVE-2022-36099Critical9.976%-Fix
CVE-2022-36100Critical9.974%-Fix
Embed a live status badge for CVE-2021-20844
CVE-2021-20844 severity badge

Markdown

[![CVE-2021-20844](https://tridentstack.com/cve/badge/CVE-2021-20844.svg)](https://tridentstack.com/cve/CVE-2021-20844)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-20844"><img src="https://tridentstack.com/cve/badge/CVE-2021-20844.svg" alt="CVE-2021-20844"></a>

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.