CVE-2023-1587 Null dereference in AVG Antivirus
A NULL pointer dereference in the RPC interface of Avast and AVG Antivirus for Windows allows attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-1587?
CVE-2023-1587 is a medium-severity vulnerability in AVAST AVG Antivirus, published on 19 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Avast and AVG Antivirus for Windows were susceptible to a NULL pointer dereference issue via RPC-interface. The issue was fixed with Avast and AVG Antivirus version 22.11
Weakness: CWE-476
Which versions are affected by CVE-2023-1587?
It affects 2 products.
Products include Avast Antivirus, Avg Anti-Virus.
How do I fix CVE-2023-1587?
No fix has been published for CVE-2023-1587 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-1587 being exploited?
There is no known exploitation of CVE-2023-1587 in the wild and no public exploit code.
Other vulnerabilities in AVAST AVG Antivirus
- CVE-2025-13032 Race condition in (Free/Inernet Security/Ultimate) Antivirus
- CVE-2020-10867 Security feature bypass in n/a
- CVE-2017-8307 Missing authorization in n/a
- CVE-2025-3500 Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
- CVE-2021-45335 Missing authorization in n/a
Sources
Also known as GHSA-2778-cfx6-g2xp.