How severe is CVE-2024-12987?

CVE-2024-12987 has a CVSS score of 7.3/10, rated HIGH. Immediate patching is strongly recommended.

Which products are affected by CVE-2024-12987?

Affected package information for CVE-2024-12987 is not yet fully mapped. Check the official advisory links for details.

How do I patch CVE-2024-12987?

No patch has shipped for CVE-2024-12987 yet — track the draytek vigor300b firmware advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2024-12987 across my infrastructure?

Inventory every draytek vigor300b firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2024-12987 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2024-12987?

O3 detects and blocks CVE-2024-12987 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2024-12987 actively exploited in the wild?

No public exploit code has been indexed for CVE-2024-12987 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2024-12987?

CVE-2024-12987 has an EPSS (Exploit Prediction Scoring System) score of 98.1%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2024-12987 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2024-12987 (DrayTek Vigor Routers OS Command Injection Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-05-15. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-06-05. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2024-12987?

CVE-2024-12987 is classified as CWE-77 (CWE-77), OS Command Injection (CWE-78). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2024-12987?

CVE-2024-12987 affects draytek vigor300b firmware (1 version, e.g. 1.5.1.4); draytek vigor2960 firmware (1 version, e.g. 1.5.1.4). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2024-12987?

A Nuclei detection template exists for CVE-2024-12987, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2024-12987 published, and has it been updated?

CVE-2024-12987 was published on December 27, 2024 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2024-12987: Vigor300b Firmware CWE-77 (High 7.3)

EPSS Exploitation Probability

via FIRST.org ↗

98.1%probability of exploitation in next 30 days

Very High Risk100th percentile-0.04%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface. The manipulation of the argument session leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.5 is able to address this issue. It is recommended to upgrade the affected component.

Affected Products

2 products · 2 configurations

OS

vigor300b firmwaredraytek

1 version

1.5.1.4

OS

vigor2960 firmwaredraytek

1 version

1.5.1.4

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every draytek vigor300b firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2024-12987 yet — track the draytek vigor300b firmware advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2024-12987 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2024-12987. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface. The manipulation of the argument session leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.5 is able to address this issue. It is recommended to upgrade the affected component.

O3 Security · Runtime Protection

Is CVE-2024-12987 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2024-12987 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

Protect my workloads How runtime protection works

CVE-2024-12987

EPSS Exploitation Probability

Description

Affected Products

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

How O3 protects you

Frequently Asked Questions

Is CVE-2024-12987 being exploited in your environment?