Back to CVE records
High 7.5Published Mar 25, 2019
CVE-2019-3856An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed.
Updated under an hour ago ()
Does this affect you?
It affects The libssh2 Project libssh2 and 16 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
- CVSS
- 7.5 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-190, CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
The libssh2 Project libssh2 libssh2_project:libssh2 (from the name) | 1.8.1 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
libssh2 libssh2 libssh2:libssh2 | before 1.8.1 | NVD |
debian debian_linux debian:debian_linux | 8.0; 9.0 | NVD |
netapp ontap_select_deploy_administration_utility netapp:ontap_select_deploy_administration_utility | all versions | NVD |
opensuse leap opensuse:leap | 15.0; 42.3 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0 | NVD |
redhat enterprise_linux_desktop redhat:enterprise_linux_desktop | 7.0 | NVD |
redhat enterprise_linux_server redhat:enterprise_linux_server | 7.0 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 7.6 | NVD |
redhat enterprise_linux_server_eus redhat:enterprise_linux_server_eus | 7.6 | NVD |
redhat enterprise_linux_server_tus redhat:enterprise_linux_server_tus | 7.6 | NVD |
redhat enterprise_linux_workstation redhat:enterprise_linux_workstation | 7.0 | NVD |
fedoraproject fedora fedoraproject:fedora | 28 | NVD |
oracle peoplesoft_enterprise_peopletools oracle:peoplesoft_enterprise_peopletools | 8.56; 8.57 | NVD |
References
- https://www.libssh2.org/CVE-2019-3856.htmlx-refsource-misc, patch, vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856x-refsource-confirm, issue-tracking, patch, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlmailing-list, x-refsource-mlist, third-party-advisory
- https://security.netapp.com/advisory/ntap-20190327-0005/x-refsource-confirm, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:0679vendor-advisory, x-refsource-redhat, third-party-advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlvendor-advisory, x-refsource-suse, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/vendor-advisory, x-refsource-fedora
- https://www.debian.org/security/2019/dsa-4431vendor-advisory, x-refsource-debian, third-party-advisory
- https://seclists.org/bugtraq/2019/Apr/25mailing-list, x-refsource-bugtraq, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:1175vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:1652vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:1791vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:1943vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2019:2399vendor-advisory, x-refsource-redhat, third-party-advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlx-refsource-misc, patch, third-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.