Lucene search
K
Catalog
Vendors
Products
Timeline
Vulnerabilities
Sources
Documentation
Blog
Glossary
FAQ
Brand assets
Assessment
Agents dashboard
Agent Scanning
API Scanning
Assessment API
Alerts
Email notifications
Webhook notifications
Alerts API
SBOM package analysis
API Reference
Support
Settings
Sign in

JLSEC-2025-188 In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer over...

🗓️ 27 Oct 2025 15:45:54Reported by GoogleType 
osv
 osv🔗 osv.dev👁 2 Views

Libssh2 before 1.9.0 has integer overflow in disconnect bounds check enabling out-of-bounds access.

Related
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
27 Jan 202100:05
–ibm
IBM Security Bulletins		Security Bulletin: Security vulnerabilities have been identified in BigFix Platform shipped with IBM License Metric Tool.
19 May 202013:33
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in libssh2 CVE-2019-17498.
22 Sep 202123:38
–ibm
IBM Security Bulletins		Security Bulletin: IBM MQ Appliance is affected by a libssh2 vulnerability (CVE-2019-17498)
20 Jan 202112:27
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilties have been fixed in the IBM Security Access Manager and IBM Security Verify Access appliances.
16 Mar 202119:55
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
27 Jan 202100:04
–ibm
Tenable Nessus		Amazon Linux 2 : libssh2 (ALAS-2020-1531)
28 Oct 202000:00
–nessus
Tenable Nessus		CentOS 7 : libssh2 (RHSA-2020:3915)
20 Oct 202000:00
–nessus
Tenable Nessus		Debian DLA-1991-1 : libssh2 security update
14 Nov 201900:00
–nessus
Tenable Nessus		Debian DLA-2848-1 : libssh2 - LTS security update
18 Dec 202100:00
–nessus
Rows per page
SourceLink
listswww.lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
packetstormsecuritywww.packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
blogwww.blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
githubwww.github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
githubwww.github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c
githubwww.github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
listswww.lists.debian.org/debian-lts-announce/2019/11/msg00010.html
listswww.lists.debian.org/debian-lts-announce/2021/12/msg00013.html
listswww.lists.debian.org/debian-lts-announce/2023/09/msg00006.html
listswww.lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

Book a live demo
06 Nov 2025 23:02Current
8High risk
Vulners AI Score8
CVSS 25.8
CVSS 3.18.1
EPSS0.0142
ssh disconnect overflowmemory read overflowdenial of service
2