CVE-2021-25327Public exploitNetwork attack vector

Administrator-session script execution via unsanitized form values

Published Apr 9, 2021 · Updated Aug 3, 2024

Stored XSS and CSRF in Skyworth Digital Technology RN510 3.1.0.4 allow remote attackers to execute script in an administrator's browser. The Boa web interface stores unsanitized DestIPAddress and urlitem values at /cgi-bin/net-routeadd.asp and /cgi-bin/sec-urlfilter.asp and accepts state-changing POSTs without CSRF validation. Exploitation requires an authenticated administrator's browser to submit a crafted request and render the stored payload, enabling unauthorized route or URL-filter changes and script execution in that session.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS and CSRF in Skyworth Digital Technology RN510 3.1.0.4 allow remote attackers to execute script in an administrator's browser. The Boa web interface stores unsanitized DestIPAddress and urlitem values at /cgi-bin/net-routeadd.asp and /cgi-bin/sec-urlfilter.asp and accepts state-changing POSTs without CSRF validation. Exploitation requires an authenticated administrator's browser to submit a crafted request and render the stored payload, enabling unauthorized route or URL-filter changes and script execution in that session.

The record

CVE
CVE-2021-25327
Published
Apr 9, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CWE-352, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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