Threats / D-Link / CVE-2013-5223
CVE-2013-5223
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
D-Link DSL-2760U vulnerability
Cross-site scripting vulnerability in D-Link DSL-2760U gateway allows authenticated users to inject arbitrary web script or HTML.
Verdict
Today item — known-exploited.
Authenticated XSS in gateway management interface. Exploited in wild. Enables session hijacking, credential theft, or malware distribution to other users accessing the device.
CISA KEV Yes · 2022-03-254EPSS 0.33567 (verify live)5CVSS 5.4 (CISA)3CISA SSVC Exploitation: active · Automatable: no · Impact: partial3
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
4 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25).
Probability (EPSS)
EPSS 0.33567 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) · Affected: D-Link, DSL-2760U. Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
Weakness (CWE)
Mapped to CWE-79 Cross-site Scripting (XSS) — weakness family: Web / client.CWE assignment from the public NVD record (may be stale); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: partialCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 3052 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I authenticate to the DSL-2760U web interface using valid credentials.
Business
Gateway access control assumes authenticated users are trusted; this assumption fails.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I inject malicious JavaScript into a stored field or parameter that reflects back to other administrators.
Business
Administrative sessions become compromised, exposing network configuration and credentials.
3
Lateral reach — past segmentation narrative 3
Attacker
I capture session tokens or redirect administrators to phishing pages via the injected script.
Business
Attackers gain persistent access to gateway management, enabling network-wide compromise.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05