CVE-2021-32921

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

1.60% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 75.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-05-13 15:14Z5 YR AGO

Last updated

2024-08-03 23:33Z2 YR AGO

Reserved

2021-05-12

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.1

Document digest

672c2bbcd3eb5f60f3dd9b224a8dd54dfaf6a95caa3475e01e60feebd1e170df

• blog.prosody.imhttps://blog.prosody.im/prosody-0.11.9-released/x_refsource_MISC
• www.openwall.com[oss-security] 20210513 Prosody XMPP server advisory 2021-05-12 (multiple vulnerabilities)http://www.openwall.com/lists/oss-security/2021/05/13/1mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20210514 Re: Prosody XMPP server advisory 2021-05-12 (multiple vulnerabilities)http://www.openwall.com/lists/oss-security/2021/05/14/2mailing-listx_refsource_MLIST
• www.debian.orgDSA-4916https://www.debian.org/security/2021/dsa-4916vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2021-b5d8c6d086https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MFFBZWXKPZEVZNQSVJNCUE7WRF3T7DG/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-a33f6e36e1https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LWJ2DG2DFJOEFEWOUN26IMYYWGSA2ZEE/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-498be8f560https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUN63AHEWB2WRROJHU3BVJRWLONCT2B7/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orghttps://security.gentoo.org/glsa/202105-15x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20210616 [SECURITY] [DLA 2687-1] prosody security updatehttps://lists.debian.org/debian-lts-announce/2021/06/msg00016.htmlmailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20210619 [SECURITY] [DLA 2687-2] prosody regression updatehttps://lists.debian.org/debian-lts-announce/2021/06/msg00018.htmlmailing-listx_refsource_MLIST