Cyber Resilience

CVE-2013-5223

XSS in Dlink Dsl-2760U Firmware ≤ 1.12

CISA KEVActive ExploitationEUVD ExploitedPublic PoCXSS
Published
19 November 2013
Modified
22 April 2026
KEV Added
25 March 2022
Patch / advisory
View advisory
CVSS Score v3.1 5.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.34 98th percentile
Risk Priority 75 floored blend · peak EPSS

Summary

CVE-2013-5223 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Dlink Dsl-2760U Firmware. Its CVSS base score is 5.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Browser Session Hijacking (T1185); ranked in the top 2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability consists of multiple cross-site scripting flaws, tracked as CVE-2013-5223, that affect the D-Link DSL-2760U Gateway running firmware revision E1. These issues are instances of CWE-79 and are rated at CVSS 5.4. They reside in numerous administrative CGI and CMD endpoints, including sntpcfg.cgi, ddnsmngr.cmd, todmngr.tod, urlfilter.cmd, scprttrg.cmd, scoutflt.cmd, portmapcfg.cmd, snmpconfig.cgi, scinflt.cmd, prmngr.cmd, ippcfg.cmd, samba.cgi, and wlcfg.wl, where unsanitized parameters such as ntpServer1, username, TodUrlAdd, appName, fltName, groupName, snmpRoCommunity, PolicyName, ippName, smbNetBiosName, and wlSsid are accepted.

Remote authenticated users can exploit the flaws by supplying crafted values in HTTP requests to the listed endpoints. Successful injection results in arbitrary web script or HTML being stored and later rendered in the browsers of other authenticated administrators, allowing theft of session tokens or other client-side actions within the gateway's management interface.

No vendor advisories, firmware updates, or mitigation guidance are referenced in the supplied OSVDB entries.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Multiple cross-site scripting (XSS) vulnerabilities in D-Link DSL-2760U Gateway (Rev. E1) allow remote authenticated users to inject arbitrary web script or HTML via the (1) ntpServer1 parameter to sntpcfg.cgi, username parameter to (2) ddnsmngr.cmd or (3) todmngr.tod, (4) TodUrlAdd parameter…

more

to urlfilter.cmd, (5) appName parameter to scprttrg.cmd, (6) fltName in an add action or (7) rmLst parameter in a remove action to scoutflt.cmd, (8) groupName parameter to portmapcfg.cmd, (9) snmpRoCommunity parameter to snmpconfig.cgi, (10) fltName parameter to scinflt.cmd, (11) PolicyName in an add action or (12) rmLst parameter in a remove action to prmngr.cmd, (13) ippName parameter to ippcfg.cmd, (14) smbNetBiosName or (15) smbDirName parameter to samba.cgi, or (16) wlSsid parameter to wlcfg.wl.

CWE(s)
CWE-79
KEV Date Added
25 March 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1189 Drive-by Compromise Initial Access
Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-34856Same vendor: Dlink
CVE-2018-6882Shared CWE-79both on KEV
CVE-2023-5631Shared CWE-79both on KEV
CVE-2012-0767Shared CWE-79both on KEV
CVE-2022-27926Shared CWE-79both on KEV
CVE-2019-18426Shared CWE-79both on KEV
CVE-2023-34192Shared CWE-79both on KEV
CVE-2020-3580Shared CWE-79both on KEV
CVE-2020-11023Shared CWE-79both on KEV
CVE-2021-1879Shared CWE-79both on KEV

Affected Assets

dlink
dsl-2760u firmware
≤ 1.12

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.1.2
  • V1.3.2

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly target introduction of XSS via coding standards/testing (mostly), yet the single broad outcome leaves many specific neutralization vectors unaddressed (partial).

PR.PS-02 partial match
prevents

Patching and EOL replacement can remediate known XSS instances in libraries or frameworks (partial) but do nothing to enforce input neutralization in application code (none).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Secure-coding testing and automated code-analysis tools are applied to detect improper neutralization of script-related content during web-page generation.

A.5.6 Contact with special interest groups partial match
prevents

Knowledge exchange on emerging attack techniques and patches reduces the likelihood that cross-site scripting flaws remain unaddressed in deployed applications.

A.5.7 Threat intelligence partial match
prevents

Operational indicators of compromise for web-application attacks can be incorporated into WAF or input-filtering rules, lowering the likelihood that unsanitized data reaches the browser.

A.8.25 Secure development life cycle partial match
prevents

Requiring language-specific secure-coding standards and automated scanning during the SDLC catches missing output encoding or improper neutralization of untrusted data before the software reaches production.

A.8.28 Secure coding partial match
prevents

Secure-coding standards, SAST scans and removal of insecure code samples together eliminate the failure to neutralize script content that produces cross-site scripting flaws.

A.8.7 Protection against malware none match
none

Webpage malware scanning and block-listing of known malicious sites reduce the likelihood that reflected or stored script payloads reach a user’s browser.

References