CVE-2021-44143

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

3.78% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.9% 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

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-11-22 19:29Z4 YR AGO

Last updated

2024-08-04 04:17Z2 YR AGO

Reserved

2021-11-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

7b47471ece8099beca33df62c14988c8bfa434a6a9e16ca8f85f99529e67dcb5

• bugs.debian.orghttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=999804x_refsource_MISC
• sourceforge.nethttps://sourceforge.net/p/isync/isync/ref/master/tags/x_refsource_MISC
• sourceforge.nethttps://sourceforge.net/p/isync/isync/commit_browserx_refsource_MISC
• www.openwall.com[oss-security] 20211203 CVE-2021-44143: heap overflow in isync/mbsynchttp://www.openwall.com/lists/oss-security/2021/12/03/2mailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2021-577129851bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYZ2GNB4ZO2T27D2XNUWMCS3THZYSJQU/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-b7fdb7e69ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCBSY7OZ57XNC6ZYXF6WU5KBSWITZVDX/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202208-15https://security.gentoo.org/glsa/202208-15vendor-advisoryx_refsource_GENTOO