CVE-2019-17498

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.8% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-14.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-10-21 00:00Z7 YR AGO

Last updated

2026-10-14 06:54Z15 DAYS AGO

Reserved

2019-10-11

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

ad2b257ab96a4e384f52e60615116c9826e68a673b8ad21f64977a4d55aa7400

• github.comhttps://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
• blog.semmle.comhttps://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
• github.comhttps://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
• lists.fedoraproject.orgFEDORA-2019-91529f19e4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/vendor-advisory
• lists.opensuse.orgopenSUSE-SU-2019:2483http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.htmlvendor-advisory
• lists.debian.org[debian-lts-announce] 20191113 [SECURITY] [DLA 1991-1] libssh2 security updatehttps://lists.debian.org/debian-lts-announce/2019/11/msg00010.htmlmailing-list
• lists.fedoraproject.orgFEDORA-2019-ec04c34768https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/vendor-advisory
• github.comhttps://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
• lists.debian.org[debian-lts-announce] 20211217 [SECURITY] [DLA 2848-1] libssh2 security updatehttps://lists.debian.org/debian-lts-announce/2021/12/msg00013.htmlmailing-list
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20220909-0004/
• packetstormsecurity.comhttp://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
• lists.debian.org[debian-lts-announce] 20230908 [SECURITY] [DLA 3559-1] libssh2 security updatehttps://lists.debian.org/debian-lts-announce/2023/09/msg00006.htmlmailing-list
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html