CVE-2025-9003VulnerabilityPublished 15 Aug 2025Updated 18 Aug 2025

CVE-2025-9003: D-Link DIR-818LW · Cross Site Scripting

Affects D-Link DIR-818LWSource CVE Database V5

Not known to be exploited · CVSS 5.1 Medium · end of life, no fix coming : replace or isolate D-Link DIR-818LW; no fix will be released.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score

5.1Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: None coming – the product is end of life

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

No fix will be released: D-Link DIR-818LW is end of life. Replace it, or isolate it from untrusted networks until you can.

Affected software

Product	Affected	Fixed in
D-Link DIR-818LW	Affected =1.04	Fixed in–

AI-suggested

Given the lack of official patches, European organizations should prioritize replacing the affected D-Link DIR-818LW devices with supported and updated hardware to eliminate the vulnerability. If immediate replacement is not feasible, organizations should restrict access to the router's management interface by limiting it to trusted internal networks and disabling remote management features. Implement network segmentation to isolate vulnerable devices from critical systems. Employ web filtering and endpoint security solutions to reduce the risk of users interacting with malicious content that could trigger the XSS attack. Regularly monitor network traffic and router logs for suspicious activities indicative of exploitation attempts. Educate users about the risks of clicking unknown links or interacting with unsolicited content that could facilitate exploitation. Additionally, consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures targeting known XSS attack patterns to detect and block attempts. Finally, maintain an inventory of network devices to identify unsupported hardware and plan for timely upgrades.

Description

A vulnerability has been found in D-Link DIR-818LW 1.04. This vulnerability affects unknown code of the file /bsc_lan.php of the component DHCP Reserved Address Handler. The manipulation of the argument Name leads to cross site scripting. The attack can be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Impact

For European organizations, the impact of this vulnerability depends on the prevalence of the D-Link DIR-818LW router within their network infrastructure. Small and medium enterprises (SMEs) or home offices using this device could be at risk of unauthorized access or manipulation of network configurations through XSS attacks. Attackers exploiting this vulnerability could gain access to sensitive network management interfaces, potentially leading to interception of internal traffic, redirection of DNS queries, or insertion of malicious payloads into network traffic. This could compromise confidentiality and integrity of organizational data. Since the device is no longer supported, organizations relying on it face increased risk due to the absence of vendor patches. Additionally, the need for user interaction and some privilege level reduces the likelihood of widespread automated exploitation but does not eliminate targeted attacks, especially in environments where users may be less security-aware. The vulnerability could also be leveraged as a foothold for lateral movement within a network if attackers gain initial access through phishing or social engineering.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Aug 2025, 01:04 UTC

Technical details

References

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