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Vulnerability Database · Debian · Package report

openconnect: vulnerability history, versions and safety

openconnect is a package in the Debian ecosystem. Vulert records 20 vulnerabilities for it across 20 releases, from Oct 2010 to May 2020. 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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20 vulnerabilities recorded U20
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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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0 in the last 12 months

Nothing new recorded in the last year.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all openconnect vulnerabilities

Vulert verdict on openconnect i

Updated on 23 Oct 2026

Careful: 2 of the 20 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 20 vulnerabilities on record across 9 years, none 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 20 over 9 years · 0 in the last year i
  • Latest disclosure 12 May 2020 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 openconnect, 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.

Newest 20 of 20 versions on record. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2010 8
  • 2012 2
  • 2013 2
  • 2019 2
  • 2020 6

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 20 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for openconnect

The 5 most severe of 20 vulnerabilities recorded for this package

Search all 20 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Buffer Overflow Vulnerability in OpenConnect 8.09 9.8 critical 8.10-1 12 May 2020
Heap Overflow Vulnerability in OpenConnect VPN Client 9.8 critical 5.02-1 13 Feb 2020
Buffer Overflow Vulnerability in OpenConnect Package 9.8 critical 8.02-1.1 17 Sep 2019
OpenConnect through 8.08 X509_check_ Function Negative Return Value Handling Vulnerability 5.9 medium No fix published 23 Apr 2020
Heap-Based Buffer Overflow in OpenConnect: Denial of Service Vulnerability N/A unrated 3.18-1 07 Jun 2012

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 openconnect

Is openconnect safe to use?

Vulert records 20 vulnerabilities for openconnect in Debian: 0 critical, 0 high, 0 medium and 0 low, plus 20 not yet rated. 2 of them have no published fix yet, so those are the ones to avoid or mitigate.

How many vulnerabilities does openconnect have?

20 vulnerabilities are recorded for openconnect in the Debian ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 20 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 openconnect vulnerabilities disclosed?

0 vulnerabilities were recorded for openconnect in the last 12 months, and the oldest entry in this database dates to 14 Oct 2010. 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 openconnect 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 openconnect for upcoming vulnerabilities?

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