CVE-2013-5223

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 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.

CVSS: 5.4Mediumscored by CISA
Exploited in the wild: Yes, in CISA KEV since 25 Mar 2022CISA deadline for US federal agencies: 15 Apr 2022public exploit code
EPSS: 50.8%chance of exploitation in the next 30 daystop 2% of scored CVEsFIRST score of 11 Nov 2026
Fix: Patch availablesee the advisories in the references
Published: 19 Nov 2013analysed here 12 Nov 2026

Do first. Apply updates per vendor instructions. (CISA's required action for this KEV entry)

Summary

Triage

Attack surface: Client-side
Exploitable: At runtime
Attack vector: network
Weakness: CWE-79 Cross-Site Scripting (XSS)
Can a WAF block it?: Yes. See why

The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.

Affected products

Products named in our analysis

dlink:dsl-2760u_firmware

Fix and mitigation

WAF and other mitigations

Can a WAF block it? Yes. Cross-site scripting sends script tags or event handlers in the request, which WAF signatures match well.

Also consider: CSP · output encoding

Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

Remediation steps (AI-written)

Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.

Exploitation evidence

CISA KEV catalog: Listed since 25 Mar 2022.
CISA due date: 15 Apr 2022, the remediation deadline for US federal agencies
CISA required action: Apply updates per vendor instructions.
Public exploit code: Yes: 2 on Exploit-DB
CISA SSVC: exploitation active, automatable no, technical impact partialAssessed by CISA 7 Feb 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.

Exploit-DB

D-Link DSL-500B Gen 2 - Parental Control Configuration Panel Persistent Cross-Site Scriptingwebapps, 11 May 2015
D-Link DSL-500B Gen 2 - URL Filter Configuration Panel Persistent Cross-Site Scriptingwebapps, 11 May 2015

Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.

Timeline

19 Nov 2013Published
11 May 2015First public exploit or proof of concept538 days (about 1 year) later
25 Mar 2022Added to CISA KEV (exploited in the wild)2,510 days (about 7 years) later
15 Apr 2022CISA remediation due date (US federal agencies)21 days later
7 Feb 2025CISA SSVC assessment: exploitation active1,030 days (about 3 years) later
22 Oct 2025CVE record last updated256 days (about 9 months) later
12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later

CVSS vector

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

Metric	Value	What it means
Attack vector	NetworkReachable over the internet or any routable network.	Reachable over the internet or any routable network.
Attack complexity	LowRepeatable attack, no special conditions.	Repeatable attack, no special conditions.
Privileges required	LowThe attacker needs basic user privileges.	The attacker needs basic user privileges.
User interaction	RequiredA victim must click, open or otherwise cooperate.	A victim must click, open or otherwise cooperate.
Scope	ChangedImpact crosses a security boundary into other components.	Impact crosses a security boundary into other components.
Confidentiality	LowPartial data disclosure.	Partial data disclosure.
Integrity	LowLimited modification possible.	Limited modification possible.
Availability	NoneThe service stays up.	The service stays up.

Common questions

Is CVE-2013-5223 being exploited?

Yes. CVE-2013-5223 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2013-5223?

CVE-2013-5223 is rated Medium with a CVSS score of 5.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2013-5223?

Yes. A fix has been recorded for CVE-2013-5223. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2013-5223 affect?

CVE-2013-5223 affects dlink:dsl-2760u_firmware. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

References

NVD CVE.org CVE Details Source

19 references in the CVE record, grouped by the tags the record gives them.

Where the data on this page comes from

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA KEV catalog: exploitation, date added, due date
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Exploit-DB: published exploits

Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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