Security 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
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 0.51 99th percentile
Risk Priority 75 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

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 Protocol or Service Impersonation (T1001.003); ranked in the top 1% 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)

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)
KEV Date Added
25 March 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1011 Exfiltration Over Other Network Medium Exfiltration
Adversaries may attempt to exfiltrate data over a different network medium than the command and control channel.
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
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-2023-43770Shared CWE-79both on KEV
CVE-2019-18426Shared CWE-79both on KEV
CVE-2020-35730Shared CWE-79both on KEV
CVE-2020-3580Shared CWE-79both on KEV
CVE-2023-5631Shared CWE-79both on KEV
CVE-2019-9978Shared CWE-79both on KEV
CVE-2018-6882Shared CWE-79both on KEV
CVE-2014-2120Shared CWE-79both on KEV
CVE-2020-11023Shared 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.

addresses: CWE-79

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

addresses: CWE-79

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

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
blocks

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
blocks

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.

removes
removes
removes
removes
blocks

A.5.6 only promotes membership in groups to improve knowledge, receive alerts, and share information; it performs no action that stops XSS exploitation (or even the underlying neutralization defect) and is a pure dependency for other controls per the owner's labeling rule.

References