VulnerabilityModified
CVE-2021-38371
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
HIGH 7.5EPSS 2.00%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.00% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- exim/exim
- Source
- cve@mitre.org
References
- https://nostarttls.secvuln.infoTool Signature
- https://www.exim.orgProduct
- https://www.exim.org/static/doc/security/CVE-2021-38371.txtBroken Link, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html
- https://nostarttls.secvuln.infoTool Signature
- https://www.exim.orgProduct
- https://www.exim.org/static/doc/security/CVE-2021-38371.txtBroken Link, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.