CVE-2017-15920
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 0x80002054.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 7.6%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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 0x80002054. This is due to the input buffer being NULL or the input buffer size being 0 as they are not validated.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.58% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · first 26 October 2017
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- watchdogdevelopment/anti-malware · watchdogdevelopment/online security pro
- Source
- cve@mitre.org
EPSS moved from 6.0% on 21 September 2026 to 7.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/144786/Watchdog-Development-Anti-Malware-Online-Security-Pro-NULL-Pointer-Dereference.htmlExploit, Issue Tracking, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/43058/Exploit, Issue Tracking, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/144786/Watchdog-Development-Anti-Malware-Online-Security-Pro-NULL-Pointer-Dereference.htmlExploit, Issue Tracking, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/43058/Exploit, Issue Tracking, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.