CVE-2024-0531VulnerabilityPublished 15 Jan 2024Updated 3 Jun 2025

CVE-2024-0531: Tenda A15 · Stack-based Buffer Overflow

Affects Tenda A15Source CVE Database V5

Not known to be exploited · CVSS 7.2 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

7.2High

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

EPSS: 1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

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

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, 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: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Jan 2024
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

Affected software

Product	Affected	Fixed in
Tenda A15	Affected =15.13.07.13	Fixed in–

AI-suggested

1. Immediate network segmentation: Isolate Tenda A15 devices from critical infrastructure and sensitive data networks to limit potential lateral movement if compromised. 2. Restrict management interface access: Limit access to the web-based management interface to trusted IP addresses and use VPNs or secure channels for administrative access. 3. Monitor network traffic: Deploy intrusion detection/prevention systems (IDS/IPS) to detect anomalous requests targeting /goform/setBlackRule or unusual traffic patterns from Tenda A15 devices. 4. Replace or upgrade hardware: Where possible, replace affected Tenda A15 routers with devices from vendors with active security support and patch management. 5. Implement strong authentication: Ensure that router management interfaces use strong, unique credentials and consider multi-factor authentication if supported. 6. Regularly audit device firmware versions and configurations to identify and remediate vulnerable devices promptly. 7. Apply network-level filtering to block suspicious payloads or malformed requests targeting the vulnerable endpoint. 8. Stay informed on vendor updates or community patches and apply them immediately once available.

Description

A vulnerability was found in Tenda A15 15.13.07.13. It has been classified as critical. This affects an unknown part of the file /goform/setBlackRule of the component Web-based Management Interface. The manipulation of the argument deviceList leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-250701 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations, the impact of this vulnerability can be severe. The Tenda A15 router is commonly used in small to medium-sized enterprises and residential environments, often serving as a gateway device. Successful exploitation could allow attackers to execute arbitrary code remotely, potentially leading to full device compromise. This could enable attackers to intercept or manipulate network traffic, launch further attacks within the internal network, or disrupt network availability. Confidential information passing through the router could be exposed or altered, impacting data privacy and regulatory compliance such as GDPR. The requirement for high privileges to exploit suggests that attackers may need to first gain some level of access, but once achieved, the consequences are critical. The absence of vendor response and patch availability increases the risk for organizations relying on this hardware. Disruption or compromise of network infrastructure devices like routers can have cascading effects on business operations, especially for organizations with remote offices or teleworking setups dependent on these devices.

CWE-121Stack-based Buffer Overflow (opens in a new tab)
Variant weaknessLikelihood of exploit: HighCWE Top 25 (2025): #14
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Operation · Build and Compilation · Environment Hardening
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index…
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Implementation
Implement and perform bounds checking on input.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Jul 2025, 21:43 UTC

WeaknessesCWE-121

Technical details

References

Community reviews

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