CVE-2015-1782

The kex_agree_methods function in libssh2 before 1.5.0 allows remote servers to cause a denial of service (crash) or have other unspecified impact via crafted length values in an SSH_MSG_KEXINIT packet.

Published: 2015-03-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-1782 is rated Moderate Risk (57.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.50%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-1782

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.84% 3.50% -0.34%
2 2026-06-09 3.64% 3.84% +0.21%
3 2026-06-07 — 3.64% —

Full EPSS history (44 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-1782

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2015-1782

OS Trackers for CVE-2015-1782

vendor priority summary link
debian not yet assigned CVE-2015-1782 not yet assigned priority: Debian including 1 source packages (libssh2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-1782
redhat low — https://access.redhat.com/security/cve/CVE-2015-1782
suse medium CVE-2015-1782 severity moderate: SUSE including 276 source package names (0.9.1:libssh2-1-1.4.3-11.1, 1.0.0:libssh2-1-1.4.3-11.1, …), 341 product×package rows across 76 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (76 product lines)): Known Affected 231, Fixed 110. https://www.suse.com/security/cve/CVE-2015-1782/
ubuntu medium CVE-2015-1782 medium priority: Ubuntu including 1 source packages (libssh2), 13 status rows across 13 suites (artful, bionic, cosmic, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 3, released 2. https://ubuntu.com/security/CVE-2015-1782

Affected software / configurations for CVE-2015-1782

Vendor Product Version Raw CPE
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
libssh2 libssh2 <= 1.4.3 cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
fedoraproject fedora 21 cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
fedoraproject fedora 22 cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*

References for CVE-2015-1782

cvelogic Threat Intelligence