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Vulnerability Database · Debian · Package report

opensmtpd: vulnerability history, versions and safety

opensmtpd is a package in the Debian ecosystem. Vulert records 13 vulnerabilities for it across 9 releases, from May 2014 to Nov 2025. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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13 vulnerabilities recorded U13
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2 with no fix published

No patched version yet — these are the ones to plan around.

See the unfixed vulnerabilities →
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1 in the last 12 months

Most recent disclosure 01 Nov 2025.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all opensmtpd vulnerabilities

Vulert verdict on opensmtpd i

Updated on 23 Oct 2026

Careful: 2 of the 13 vulnerabilities Vulert records for this package have no fix yet. Plan around those, or apply the workaround listed for each. The rest have a fixed version to move to.

Long-term outlook: usable, but needs attention 13 vulnerabilities on record across 11 years, 1 in the last year.

What to do: Plan around the 2 vulnerabilities with no published fix: each lists the affected range and any workaround that reduces exposure. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →

  • Vulnerabilities on record 13 over 11 years · 1 in the last year i
  • Latest disclosure 01 Nov 2025 i
  • Highest CVSS 9.8 i
  • With no published fix 2 i

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01 Versions

Which versions are affected

Every version Vulert holds for opensmtpd, newest first, with the vulnerabilities that name it. A version with a count of zero has no recorded vulnerabilities; open a version to see the vulnerabilities it is exposed to.

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Version Vulert vulnerabilities Fix published Details
7.7.0p0-1 U2 No Details →
7.6.0p1-1 U2 No Details →
7.5.0p0-1 U2 No Details →
7.4.0p1-1 U2 No Details →
7.4.0p1-1~bpo12+1 U2 No Details →
7.3.0p2-1 U2 No Details →
7.3.0p1-1 U2 No Details →
6.8.0p2-4 U2 No Details →
6.8.0p2-3 U2 No Details →

Newest 9 of 9 versions on record. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2014 2
  • 2017 2
  • 2020 7
  • 2023 1
  • 2025 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 1 of the 13 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for opensmtpd

The 5 most severe of 13 vulnerabilities recorded for this package

Search all 13 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Critical Use-After-Free Vulnerability in OpenSMTPD: CVE-2015-7687 9.8 critical 5.7.3p1-1 16 Oct 2017
Critical Remote Code Execution Vulnerability in OpenSMTPD 9.8 critical 6.6.4p1-1 25 Feb 2020
Critical Vulnerability in OpenSMTPD: Local IPv6 Address Connection Causes Abort 7.8 high No fix published 04 Apr 2023
OpenSMTPD Local File Read Vulnerability in Debian 4.7 medium 6.6.4p1-1 25 Feb 2020
Critical Use-After-Free Vulnerability in OpenSMTPD: Denial of Service and Remote Code Execution Risk N/A unrated 5.7.3p1-1 16 Oct 2017

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About opensmtpd

Is opensmtpd safe to use?

Vulert records 13 vulnerabilities for opensmtpd in Debian: 0 critical, 0 high, 0 medium and 0 low, plus 13 not yet rated. 2 of them have no published fix yet, so those are the ones to avoid or mitigate.

How many vulnerabilities does opensmtpd have?

13 vulnerabilities are recorded for opensmtpd in the Debian ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 13 not yet rated. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new opensmtpd vulnerabilities disclosed?

1 vulnerability was recorded for opensmtpd in the last 12 months, and the oldest entry in this database dates to 27 May 2014. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of opensmtpd are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor opensmtpd for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the opensmtpd version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.