CVE-2019-3859
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A r
CVSS
9.1
Critical
EPSS
6.3%
p94
KEV
—
Exploit Today
28
0-100
Published: Mar 21, 2019 · Last modified: Oct 14, 2026 · CWE-125
6.3%EPSS · 30 days6.3%
2026-10-042026-11-01
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2019/03/18/3
- www.securityfocus.comhttp://www.securityfocus.com/bid/107485
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2019/04/msg00006.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- seclists.orghttps://seclists.org/bugtraq/2019/Apr/25
- seclists.orghttps://seclists.org/bugtraq/2019/Mar/25
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20190327-0005/
- www.broadcom.comhttps://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767
- www.debian.orghttps://www.debian.org/security/2019/dsa-4431
- www.libssh2.orghttps://www.libssh2.org/CVE-2019-3859.html
- www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-68590——
——0In ip_stack, there is a possible out of bounds read due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01387180; Issue ID: MSV-5152.14hCVE-2026-20598——
——0In Modem, there is a possible out of bounds read due to an integer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01755742; Issue ID: MSV-8896.14hCVE-2026-20597——
——0In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01758223; Issue ID: MSV-8909.14hCVE-2026-20596——
——0In Modem, there is a possible out of bounds read due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01758225; Issue ID: MSV-8910.14hCVE-2026-20594——
——0In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01349680 / MOLY01369097; Issue ID: MSV-9364.14hCVE-2026-20561——
——0In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01750090; Issue ID: MSV-8908.14h