OSV-2025-1049 Heap-buffer-overflow in unsigned char* std::__1::vector<unsigned char, std::__1::allocator<unsigned char
A heap buffer overflow in the pcpp library allows attackers to cause a denial of service via crafted TLS Client Hello messages.
- 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-2025-1049?
OSV-2025-1049 is a memory corruption vulnerability in pcapplusplus, published on 31 Dec 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=472222304
Crash type: Heap-buffer-overflow READ 1
Crash state:
unsigned char* std::__1::vector<unsigned char, std::__1::allocator<unsigned char
pcpp::TLSECPointFormatExtension::getECPointFormatList
pcpp::SSLClientHelloMessage::generateTLSFingerprint
Which versions are affected by OSV-2025-1049?
1 open source package ship an affected version, including pcapplusplus.
| Package | Affected | Fixed in |
|---|---|---|
pcapplusplus OSS-Fuzz | All versions | None |
How do I fix OSV-2025-1049?
No fix has been published for OSV-2025-1049 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-2025-1049 being exploited?
There is no known exploitation of OSV-2025-1049 in the wild and no public exploit code.