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High 7.5Published Mar 25, 2019
CVE-2019-3857An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed.
Updated under an hour ago ()
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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.
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An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal 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 | from 1.2.8 through 1.8.0 | 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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3857x-refsource-confirm, issue-tracking, patch, third-party-advisory
- https://www.libssh2.org/CVE-2019-3857.htmlx-refsource-misc, patch, vendor-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.