CVE-2021-30129DoS/OOM leak vulnerability in Apache Mina SSHD Server
- 6.5MediumCVSS base score
- 3.0%Exploitation in 30 daysEPSS · top 12% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in sshd-core of Apache Mina SSHD allows an attacker to overflow the server causing an OutOfMemory error. This issue affects the SFTP and port forwarding features of Apache Mina SSHD version 2.0.0 and later versions. It was addressed in Apache Mina SSHD 2.7.0
Timeline
ID reserved
By apache
- 3 months later
· 3 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 3.0% · top 12% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
Apache Software Foundation · Apache Mina SSHD
- affected 2.0.0 – < Apache Mina SSHD*
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.sshd:sshd-coreGHSA-9279-7hph-r3xw (opens in a new tab)
- Mavenorg.apache.sshd:sshd-minaGHSA-9279-7hph-r3xw (opens in a new tab)
References
References5
- https://lists.apache.org/thread.html/r6d4f78e192a0c8eabd671a018da464024642980ecd24096bde6db36f%40%3Cusers.mina.apache.org%3E (opens in a new tab)x_refsource_MISCmailing-listx_refsource_MLISTx_transferred
- [announce] 20210712 CVE-2021-30129: DoS/OOM leak vulnerability in Apache Mina SSHD Server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20210712 CVE-2021-30129: DoS/OOM leak vulnerability in Apache Mina SSHD Server (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.oracle.com/security-alerts/cpuapr2022.html (opens in a new tab)x_refsource_MISCx_transferred
- https://www.oracle.com/security-alerts/cpujul2022.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-1649 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9279-7hph-r3xw (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-30129)Record last updated .