CVE-2025-15245VulnerabilityPublished 30 Dec 2025

CVE-2025-15245: D-Link DCS-850L · Path Traversal

Affects D-Link DCS-850LSource CVE Database V5

Not known to be exploited · CVSS 5.1 Medium · end of life, no fix coming : replace or isolate D-Link DCS-850L; no fix will be released.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 47% 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:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Adjacent
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
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: Adjacent: The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone).
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: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within 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 30 Dec 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 26 Oct 2026.

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 DCS-850L is end of life. Replace it, or isolate it from untrusted networks until you can.

Affected software

Product	Affected	Fixed in
D-Link DCS-850L	Affected =1.02.09	Fixed in–

AI-suggested

Given the lack of vendor patches, European organizations should prioritize network-level mitigations. First, isolate D-Link DCS-850L devices on segmented VLANs or dedicated subnets with strict access controls to limit local network exposure. Implement firewall rules to restrict access to the firmware update service only to authorized management hosts. Monitor network traffic for anomalous requests targeting the uploadfirmware function or unusual file access patterns. Replace unsupported DCS-850L cameras with modern, supported devices that receive regular security updates. If replacement is not immediately feasible, disable or restrict the firmware update service if possible. Employ network intrusion detection systems (NIDS) with signatures for known exploit attempts. Conduct regular audits of IoT and surveillance devices to identify legacy hardware and assess exposure. Educate IT and security teams about the risks of unsupported devices and the importance of network segmentation. Finally, maintain an asset inventory to track devices at risk and plan phased decommissioning.

Description

A vulnerability was found in D-Link DCS-850L 1.02.09. Affected is the function uploadfirmware of the component Firmware Update Service. The manipulation of the argument DownloadFile results in path traversal. The attack must originate from the local network. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

Impact

For European organizations, the impact of CVE-2025-15245 is primarily the risk of unauthorized local network attackers gaining access to sensitive files on the D-Link DCS-850L cameras. This could lead to leakage of configuration data, credentials, or other sensitive information stored on the device, potentially facilitating further lateral movement or device compromise. The vulnerability does not directly allow remote exploitation from outside the local network, limiting its reach. However, in environments with weak network segmentation or compromised internal hosts, attackers could leverage this flaw to escalate access or disrupt surveillance capabilities. Organizations relying on these legacy cameras for security monitoring may face operational risks if attackers manipulate firmware or extract sensitive data. Since the product is no longer supported, the absence of patches increases the likelihood that vulnerable devices remain in use, especially in smaller organizations or less IT-managed environments common in parts of Europe. The medium severity rating indicates moderate risk, but the public availability of exploit code raises the urgency for mitigation. The impact is more pronounced in sectors with high security requirements such as critical infrastructure, government facilities, and enterprises with extensive physical security deployments using these cameras.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 30 Dec 2025, 22:59 UTC

Technical details

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