Quick answers
- Is CVE-2026-13587 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-13587 being exploited in the wild.
- How severe is CVE-2026-13587?
- Low severity, with a CVSS score of 3.7, published 29 June 2026.
- Which products and versions are affected?
- Seladb PcapPlusPlus 25.05.
- Is there a fix for CVE-2026-13587?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-13587 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-13587?
- Check whether you run Seladb PcapPlusPlus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow (CWE-122) exists in the LightPcapNg Parser component of PcapPlusPlus version 25.05. The vulnerability is located in the 'parse_by_block_type' function within 'light_pcapng.c'. It is triggered by manipulating the 'captured_packet_length' argument during the parsing of Enhanced Packet Blocks (EPB). While the attack can be initiated remotely, it is characterized by high complexity and difficult exploitability. Successful exploitation primarily impacts service availability. A public proof-of-concept (PoC) has been disclosed.
Affected products
- seladb PcapPlusPlus 25.05
Timeline
- 2026-06-29: disclosed: Initial disclosure and NVD publication
- 2026-06-29: advisory