CVE-2019-5544

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-03. Federal remediation due 2022-05-03. Known ransomware campaign use: reported by CISA.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

98.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Critical. 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

2019-12-06 15:54Z6 YR AGO

Last updated

2025-10-21 23:35Z1 YR AGO

Reserved

2019-01-07

Assigning CNA

vmware

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.1

Document digest

dc722199ee2b51fd104bdd1e79b41f58fe9d94c76d762bd01e90b6c0493c21fd

• www.vmware.comhttp://www.vmware.com/security/advisories/VMSA-2019-0022.htmlx_refsource_CONFIRM
• www.openwall.com[oss-security] 20191210 Re: CVE-2019-5544 openslp 1.2.1, 2.0.0 heap overflow vulnerabilityhttp://www.openwall.com/lists/oss-security/2019/12/10/2mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20191211 Re: CVE-2019-5544 openslp 1.2.1, 2.0.0 heap overflow vulnerabilityhttp://www.openwall.com/lists/oss-security/2019/12/11/2mailing-listx_refsource_MLIST
• access.redhat.comRHSA-2019:4240https://access.redhat.com/errata/RHSA-2019:4240vendor-advisoryx_refsource_REDHAT
• lists.fedoraproject.orgFEDORA-2019-1e5ae33e87https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2019-86bceb61b3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/vendor-advisoryx_refsource_FEDORA
• access.redhat.comRHSA-2020:0199https://access.redhat.com/errata/RHSA-2020:0199vendor-advisoryx_refsource_REDHAT
• security.gentoo.orgGLSA-202005-12https://security.gentoo.org/glsa/202005-12vendor-advisoryx_refsource_GENTOO
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5544government-resource