CVE-2021-33515

MEDIUM
Published Jun 28, 20215y ago · Modified Jun 17, 20262w ago
4.8 CVSS 3.1
Medium
Find Similar
Published Jun 28, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address.

CVSS Details

Base Score
4.8
Exploitability
2.2
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-77 Command Injection Injection

Affected Products 4

VendorProductVersionRange
dovecotdovecot* <2.3.14.1
fedoraprojectfedora33any
fedoraprojectfedora34any
debiandebian_linux10.0any

References 6

  • dovecot.org https://dovecot.org/security
    Vendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2022/09/msg00032.html
    Mailing ListThird Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
  • security.gentoo.org https://security.gentoo.org/glsa/202107-41
    Third Party Advisory
  • openwall.com https://www.openwall.com/lists/oss-security/2021/06/28/2
    Mailing ListThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.