OSV-2025-371 Index-out-of-bounds in tcp_analyze_sequence_number
An index-out-of-bounds error in the TCP dissector allows remote attackers to cause a denial of service via crafted network packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2025-371?
OSV-2025-371 is a memory corruption vulnerability in wireshark, published on 16 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=417518224
Crash type: Index-out-of-bounds
Crash state:
tcp_analyze_sequence_number
dissect_tcp
call_dissector_through_handle
Which versions are affected by OSV-2025-371?
1 open source package ship an affected version, including wireshark.
| Package | Affected | Fixed in |
|---|---|---|
wireshark OSS-Fuzz | All versions | None |
How do I fix OSV-2025-371?
No fix has been published for OSV-2025-371 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2025-371 being exploited?
There is no known exploitation of OSV-2025-371 in the wild and no public exploit code.