Buffer overflow in Seladb Pcapplusplus
CVE-2026-13587
A vulnerability was found in seladb PcapPlusPlus 25.05. The affected element is the function parse_by_block_type of the file light_pcapng.c of the component LightPcapNg Parser. Performing a manipulation of the argument captured_packet_length results in heap-based buffer overflow. It is possible to initiate the attack remotely. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been made public and could be used.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (49.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Seladb Pcapplusplus — versions 25.05
Weakness classification (CWE)
References
- github.com/seladb/PcapPlusPlus/ (product)
- github.com/seladb/PcapPlusPlus/issues/2149 (issue-tracking)
- github.com/user-attachments/files/28207967/poc.zip (exploit)
- vuldb.com/cve/CVE-2026-13587 (third-party-advisory)
- vuldb.com/submit/844479 (third-party-advisory)
- vuldb.com/vuln/374590 (technical-description, vdb-entry)
- vuldb.com/vuln/374590/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-13587?
- CVE-2026-13587 is a low-severity vulnerability in Seladb Pcapplusplus, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.7/10. Published 2026-06-29.
- How severe is CVE-2026-13587?
- Low severity. CVSS v3 base score is 3.7 out of 10.