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No exploitation reportedFix available

CVE-2026-78123

No exploitation reported by the sources we read.

  • Published2026-09-11
  • Fixed in6.1.0
  • WeaknessCWE-825

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.

Timeline

dates in UTC
  1. 2026-09-1102:18CVE publishedNVD

Versions per branch

NVD
Strongswan
BranchAffectedFixed in
6.1≥ 5.0.2, < 6.1.06.1.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • strongSwanother versions: not affected
    Affected
    • ≥ 5.0.2, < 6.1.0fixed in 6.1.0semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-09-11

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • py3.13-viciWolfiall versions · fixed in 6.1.0-r1
  • py3.13-viciChainguardall versions · fixed in 6.1.0-r1
  • strongswanUbuntu:Pro:FIPS:20.04:LTSall versions · no fixed version listed
  • strongswanUbuntu:Pro:FIPS:18.04:LTSall versions · no fixed version listed
  • strongswanUbuntu:Pro:FIPS:16.04:LTSall versions · no fixed version listed
  • strongswanUbuntu:Pro:FIPS-updates:22.04:LTSall versions · no fixed version listed
  • strongswanUbuntu:Pro:FIPS-updates:20.04:LTSall versions · no fixed version listed
  • strongswanUbuntu:Pro:FIPS-updates:18.04:LTSall versions · no fixed version listed

34 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Strongswan to 6.1.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-09-11
Last Modified
2026-09-15
NVD status
Analyzed
GitHub Advisory
GHSA-m7ff-3hm8-6qxh

Frequently asked questions

What is CVE-2026-78123?

strongSwan 5.0.2 through 6.0.7 has an Expired Pointer Dereference in PKCS#7 parsing in the openssl plugin.

Is CVE-2026-78123 actively exploited?

Active exploitation of CVE-2026-78123 has not been confirmed. Its EPSS score was 0.5% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-78123?

CVE-2026-78123 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record