CVE-2025-32787 SoftEtherVPN Affected by NULL dereference in DeleteIPv6DefaultRouterInRA
A NULL pointer dereference in SoftEtherVPN allows attackers to crash the service via crafted IPv6 Router Advertisement packets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-32787?
CVE-2025-32787 is a low-severity vulnerability in SoftEtherVPN, published on 16 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SoftEtherVPN is a an open-source cross-platform multi-protocol VPN Program. Versions 5.02.5184 to 5.02.5187 are vulnerable to NULL dereference in `DeleteIPv6DefaultRouterInRA` called by `StorePacket`. Before dereferencing, `DeleteIPv6DefaultRouterInRA` does not account for `ParsePacket` returning NULL, resulting in the program crashing. A patched version does not exist at this time.
Weakness: CWE-476
Which versions are affected by CVE-2025-32787?
How do I fix CVE-2025-32787?
No fix has been published for CVE-2025-32787 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-32787 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-32787 exists.
Sources
Also known as GHSA-xw53-587j-mqh6.