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Firmware & expired certificate 30th May 2020

We're currently running across all web appliances / single management appliance (it's been stable, we've had random issues in the past and do not update unless a specific reason forces us to..).

Today we experienced https scanning issues with some sites. All sites scanned through SSL Labs showed an expired cert 30th May 2020. Relating to this article:-

Has anyone else had https inspection issues today on later firmware versions 4.3.9, or 4.3.10 ??

Does the following bug fix listed in 4.3.9 release notes cover this specific issue?


The trusted CA certificates used for certificate validation have been updated.

Does updating to later versions replace the appliance cert used for https inspection?


Interested in comments from Sophos dev team if they are on this channel.

Thanks in advance!

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  • I have manually added USERTrust RSA Certification Authority self-signed, USERTrust RSA Certification Authority signed by AAA Certificate Services and COMODO RSA Certification Authority.

    It is my understanding (from that at least the latter should have provided a usable trust anchor.

    Unfortunately, there is no noticeable change.


    Hilariously, while trying to look at the changelog referenced by OP, it turned out that Sophos' own Site is equally challenged, because the SWA doesn't trust's GlobalSign chain.

    Not looking good here, Sophos.