CVE catalog
CVE-2019-3855
libssh2: CVE-2019-3855
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 9.29% · Oct 25, 2026
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. 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.
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 | libssh2 | sid | 1.11.1-6 | fixed |
| Debian | libssh2 | forky | 1.11.1-6 | fixed |
| Debian | libssh2 | trixie | 1.11.1-1+deb13u2 | fixed |
| Debian | libssh2 | trixie-security | 1.11.1-1+deb13u1 | fixed |
| Debian | libssh2 | bookworm | 1.10.0-3 | fixed |
| Debian | libssh2 | bookworm-security | 1.10.0-3+deb12u1 | fixed |
| Cpe | libssh2 | Not reported | 1.8.1 | fixed |
| Cpe | fedora | Not reported | Not reported | unknown |
| Cpe | debian_linux | Not reported | Not reported | unknown |
| Cpe | ontap_select_deploy_administration_utility | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_desktop | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_server | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_server_aus | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_server_eus | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_server_tus | Not reported | Not reported | unknown |
| Cpe | enterprise_linux_workstation | Not reported | Not reported | unknown |
| Cpe | leap | Not reported | Not reported | unknown |
| Cpe | xcode | Not reported | 11.0 | fixed |
| Cpe | peoplesoft_enterprise_peopletools | Not reported | Not reported | unknown |
| Ubuntu | libssh2 | pro | 1.8.0-1 | vulnerable |
| Ubuntu | libssh2 | pro | 1.8.0-1ubuntu0.1 | vulnerable |
| Ubuntu | libssh2 | pro | 1.8.0-1ubuntu0.1+esm1 | vulnerable |
| Alpine | libssh2 | 3.10 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.11 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.12 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.13 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.14 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.15 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.16 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.17 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.18 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.19 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.20 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.21 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.22 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.23 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.24 | 1.8.1-r0 | fixed |
| Alpine | libssh2 | 3.9 | 1.8.1-r0 | fixed |
| Suse | libssh2_org | linux enterprise software development kit 11 sp4 | 1.4.3-17.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 11 sp4 | 1.4.3-17.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server for sap applications 11 sp4 | 1.4.3-17.3.1 | fixed |
| Suse | libssh2_org | openstack cloud 7 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise desktop 12 sp3 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise desktop 12 sp4 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server for sap applications 12 sp1 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server for sap applications 12 sp2 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise software development kit 12 sp3 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise software development kit 12 sp4 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12-ltss | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12 sp1-ltss | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12 sp2-ltss | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12 sp2-bcl | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12 sp3 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server for sap applications 12 sp3 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server 12 sp4 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | linux enterprise server for sap applications 12 sp4 | 1.4.3-20.3.1 | fixed |
| Suse | libssh2_org | enterprise storage 4 | 1.4.3-20.3.1 | fixed |
| Opensuse | libssh2_org | leap 15.0 | 1.8.0-lp150.3.3.1 | fixed |
| Suse | libssh2_org | linux enterprise point of sale 11 sp3 | 1.2.9-4.2.12.5.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libssh2 | source | sid | 1.8.0-2.1 | not yet assigned | Not reported | [924965] |
| Debian | libssh2 | source | forky | 1.8.0-2.1 | not yet assigned | Not reported | [924965] |
| Debian | libssh2 | source | trixie | 1.8.0-2.1 | not yet assigned | Not reported | [924965] |
| Debian | libssh2 | source | bookworm | 1.8.0-2.1 | not yet assigned | Not reported | [924965] |
| Cpe | libssh2 | cpe | Not reported | 1.8.1 | Not reported | NVD-CVE-2019-3855 | Not reported |
| Cpe | xcode | cpe | Not reported | 11.0 | Not reported | NVD-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.10 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.11 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.12 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.13 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.14 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.15 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.16 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.17 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.18 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.19 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.20 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.21 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.22 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.23 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.24 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Alpine | libssh2 | apk | 3.9 | 1.8.1-r0 | Not reported | ALPINE-CVE-2019-3855 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise software development kit 11 sp4 | 1.4.3-17.3.1 | Not reported | SUSE-SU-2019:13982-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 11 sp4 | 1.4.3-17.3.1 | Not reported | SUSE-SU-2019:13982-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server for sap applications 11 sp4 | 1.4.3-17.3.1 | Not reported | SUSE-SU-2019:13982-1 | Not reported |
| Suse | libssh2_org | rpm | openstack cloud 7 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise desktop 12 sp3 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise desktop 12 sp4 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server for sap applications 12 sp1 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server for sap applications 12 sp2 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise software development kit 12 sp3 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise software development kit 12 sp4 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12-ltss | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12 sp1-ltss | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12 sp2-ltss | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12 sp2-bcl | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12 sp3 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server for sap applications 12 sp3 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server 12 sp4 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise server for sap applications 12 sp4 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Suse | libssh2_org | rpm | enterprise storage 4 | 1.4.3-20.3.1 | Not reported | SUSE-SU-2019:0655-1 | Not reported |
| Opensuse | libssh2_org | rpm | leap 15.0 | 1.8.0-lp150.3.3.1 | Not reported | OPENSUSE-SU-2019:1109-1 | Not reported |
| Suse | libssh2_org | rpm | linux enterprise point of sale 11 sp3 | 1.2.9-4.2.12.5.1 | Not reported | SUSE-SU-2019:13997-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libssh2-1]Unknown
Source package: [libssh2]
Details (2)
1.10.0-3+b1· amd64 · bookwormFixed · Fixed:
1.8.0-2.1dsa · libssh2 · debian · bookworm
1.10.0-3+b1· arm64 · bookwormFixed · Fixed:
1.8.0-2.1dsa · libssh2 · debian · bookworm
- [libssh2-1-dev]Unknown
Source package: [libssh2]
Details (2)
1.10.0-3+b1· amd64 · bookwormFixed · Fixed:
1.8.0-2.1dsa · libssh2 · debian · bookworm
1.10.0-3+b1· arm64 · bookwormFixed · Fixed:
1.8.0-2.1dsa · libssh2 · debian · bookworm
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-398330.json]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2019_0679.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2019-3855]
- [https://osv.dev/vulnerability/ALPINE-CVE-2019-3855]
- [https://osv.dev/vulnerability/DLA-1730-1]
- [https://osv.dev/vulnerability/DSA-4431-1]
- [https://osv.dev/vulnerability/SUSE-SU-2019:0655-1]
- [https://osv.dev/vulnerability/SUSE-SU-2019:13982-1]
- [https://osv.dev/vulnerability/SUSE-SU-2019:13997-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2019-3855]
- [https://osv.dev/vulnerability/openSUSE-SU-2019:1109-1]
- [https://security-tracker.debian.org/tracker/CVE-2019-3855]
- [https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-3855.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2019/wid-sec-w-2023-1230.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]