How severe is CVE-2017-15921?

CVE-2017-15921 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-15921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15921?

CVE-2017-15921 primarily affects Watchdogdevelopment Anti-malware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-15921?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-15921 published?

CVE-2017-15921 was published on 2017-10-30 and last updated on 2026-06-17.

CVE-2017-15921

CVE-2017-15921 is a high-severity vulnerability in Watchdogdevelopment Anti-malware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Watchdogdevelopment Anti-malware
Published: 2017-10-30
Last modified: 2026-06-17

Description

In Watchdog Anti-Malware 2.74.186.150 and Online Security Pro 2.74.186.150, the zam32.sys driver contains a NULL pointer dereference vulnerability that gets triggered when sending an operation to ioctl 0x80002010. This is due to the input buffer being NULL or the input buffer size being 0 as they are not validated.

Frequently asked questions

What is CVE-2017-15921?: In Watchdog Anti-Malware 2.74.186.150 and Online Security Pro 2.74.186.150, the zam32.sys driver contains a NULL pointer dereference vulnerability that gets triggered when sending an operation to ioctl 0x80002010. This is due to the input buffer being NULL or the input buffer size being 0 as they are not validated.
How severe is CVE-2017-15921?: CVE-2017-15921 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-15921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15921?: CVE-2017-15921 primarily affects Watchdogdevelopment Anti-malware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-15921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-15921 published?: CVE-2017-15921 was published on 2017-10-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:watchdogdevelopment:anti-malware:2.74.186.150:*:*:*:*:*:*:*
cpe:2.3:a:watchdogdevelopment:online_security_pro:2.74.186.150:*:*:*:*:*:*:*

More vulnerabilities in Watchdogdevelopment Anti-malware

CVE-2018-6627 — High (CVSS 7.8): In WatchDog Anti-Malware 2.74.186.150, the driver file (ZAMGUARD32.SYS) allows local users to cause a denial of service…
CVE-2018-6625 — High (CVSS 7.8): In WatchDog Anti-Malware 2.74.186.150, the driver file (ZAMGUARD32.SYS) allows local users to cause a denial of service…
CVE-2017-15920 — High (CVSS 7.5): In Watchdog Anti-Malware 2.74.186.150 and Online Security Pro 2.74.186.150, the zam32.sys driver contains a NULL…

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