Description
A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit is publicly available and might be used. The identifier of the patch is 98e671010bc7c87b95898c22ae289220ae92542b. It is recommended to apply a patch to fix this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| seladb | PcapPlusPlus | 25.05 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | pcapplusplus | 26.07-1.1 | openSUSE-SU-2026:11883-1 |
| openSUSE Leap 16.0 | pcapplusplus | 26.07-bp160.1.1 | openSUSE-SU-2026:22017-1 |
Advisories 2
- openSUSE-SU-2026:22017-1 Security update for pcapplusplus SUSE / openSUSE Security Updates · Oct 3, 2026
- openSUSE-SU-2026:11883-1 pcapplusplus-devel-26.07-1.1 on GA media SUSE / openSUSE Security Updates · Sep 25, 2026
References
- VDB-374592 | seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow vdb-entry technical-description
- VDB-374592 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-13589 | CVE Analysis and Report third-party-advisory
- Submit #844482 | PcapPlusPlus v25.05 Heap-based Buffer Overflow third-party-advisory
- https://github.com/seladb/PcapPlusPlus/issues/2152 issue-tracking
- https://github.com/seladb/PcapPlusPlus/pull/2161 issue-tracking patch
- https://github.com/user-attachments/files/28214571/poc.zip exploit
- https://github.com/seladb/PcapPlusPlus/commit/98e671010bc7c87b95898c22ae289220ae92542b patch
- https://github.com/seladb/PcapPlusPlus/ product