CVE catalog
CVE-2026-115505
UBUNTU-CVE-2026-115505
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.21% · Oct 25, 2026
libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes. A malicious SMB server or machine-in-the-middle on unsigned connections can send crafted NetrShareEnum replies with wrapping actual_count or max_count values when clients call smb2_share_enum_async(), corrupting heap memory.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libsmb2 | 13 | 6.2+dfsg-2 | vulnerable |
| Debian | libsmb2 | 13 | 6.2+dfsg-2+deb13u1 | vulnerable |
| Debian | libsmb2 | 13 | 6.2+dfsg-3 | vulnerable |
| Debian | libsmb2 | 13 | 6.2+dfsg-4 | vulnerable |
| Debian | libsmb2 | 14 | 6.2+dfsg-2 | vulnerable |
| Debian | libsmb2 | 14 | 6.2+dfsg-3 | vulnerable |
| Debian | libsmb2 | 14 | 6.2+dfsg-4 | vulnerable |
| Ubuntu | libsmb2 | 26.10 | 6.2+dfsg-3 | vulnerable |
| Ubuntu | libsmb2 | 26.10 | 6.2+dfsg-4 | vulnerable |
| Ubuntu | libsmb2 | 26.04 | 6.2+dfsg-2 | vulnerable |
| Ubuntu | libsmb2 | 26.04 | 6.2+dfsg-3 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [libsmb2-6]Affected
Source package: [libsmb2]
Details (2)
6.2+dfsg-2+deb13u1· amd64 · trixieAffected
pypi · libsmb2 · debian · 13
6.2+dfsg-2+deb13u1· arm64 · trixieAffected
pypi · libsmb2 · debian · 13
- [libsmb2-dev]Affected
Source package: [libsmb2]
Details (2)
6.2+dfsg-2+deb13u1· amd64 · trixieAffected
pypi · libsmb2 · debian · 13
6.2+dfsg-2+deb13u1· arm64 · trixieAffected
pypi · libsmb2 · debian · 13
Observed: