OSV-2025-290 Heap-buffer-overflow in pcpp::TelnetLayer::toString

Not scored Published

A heap buffer overflow in the Telnet layer parsing allows attackers to cause a denial of service via crafted 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-2025-290?

OSV-2025-290 is a memory corruption vulnerability in pcapplusplus, published on 19 Apr 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=411460531

Crash type: Heap-buffer-overflow READ 1
Crash state:
pcpp::TelnetLayer::toString
pcpp::Packet::toStringList
pcpp::Packet::toString

Which versions are affected by OSV-2025-290?

1 open source package ship an affected version, including pcapplusplus.

PackageAffectedFixed in
pcapplusplus OSS-FuzzAll versionsNone

How do I fix OSV-2025-290?

No fix has been published for OSV-2025-290 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-2025-290 being exploited?

There is no known exploitation of OSV-2025-290 in the wild and no public exploit code.

Sources

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