Priority MEDIUM 52
Eval injection in the JScript event-script dispatcher in Progressive Robot Ltd's hMailServer, versions 6.0.0 through 6.3.3 on Windows, allows a remote, unauthenticated attacker to run arbitrary JScript inside the hMailSe…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01731 · Published 2026-09-27 · Fixed in 6.3.4 CWE-95
Priority LOW 39
Unchecked input for a loop condition in Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to stop the server carrying mail.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00372 · Published 2026-10-19 · No fix listed CWE-606
Priority LOW 39
Inefficient algorithmic complexity in the bounce and complaint processing of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to stop mail delivery by sending messages, when bounce p…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00347 · Published 2026-10-08 · Fixed in 6.3.6 CWE-407
Priority LOW 39
Inefficient algorithmic complexity and a non-terminating loop in the MIME processing of received messages in Progressive Robot hMailServer 6.0.0 through 6.3.5 allow a remote unauthenticated attacker to make the mail serv…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00428 · Published 2026-10-08 · Fixed in 6.3.6 CWE-835
Priority LOW 39
Inefficient algorithmic complexity in the inbound DKIM and ARC signature verification of Progressive Robot hMailServer 6.0.0 through 6.3.5 allows a remote unauthenticated attacker to make the mail services unavailable by…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00428 · Published 2026-10-08 · Fixed in 6.3.6 CWE-407
Priority LOW 39
Inefficient algorithmic complexity in the JSON reader of Progressive Robot hMailServer allows a remote unauthenticated attacker to make the mail services unavailable.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00428 · Published 2026-10-08 · Fixed in 6.3.6 CWE-407
Priority LOW 38
Use of a less trusted source in the DKIM signing of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have mail they write signed with the DKIM key of a domain the server hosts…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00166 · Published 2026-10-19 · No fix listed CWE-348
Priority LOW 38
Missing network timeouts in the Linux builds of Progressive Robot hMailServer 6.3.0 through 6.3.5 allow a remote attacker to hold server threads indefinitely and so stop outbound mail delivery (denial of service).
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.0027 · Published 2026-10-08 · Fixed in 6.3.6 CWE-1088
Priority LOW 37
Missing authorization in the REST and COM administration APIs of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote authenticated user whose credential is confined to named domains to change mail routing a…
CVSS 3.1HIGH 8.1· Network · Low privileges · No interaction · EPSS 0.00272 · Published 2026-10-21 · No fix listed CWE-862
Priority LOW 36
Cross-site scripting in the webmail of Progressive Robot hMailServer 6.3.2 through 6.3.5 allows a remote attacker who can send a user an encrypted message to run script in the webmail's origin with that user's session.
CVSS 3.1HIGH 8.0· Network · No auth · User interaction · EPSS 0.00247 · Published 2026-10-08 · Fixed in 6.3.6 CWE-79
Priority LOW 35
Incorrect authorization in the COM administration API of Progressive Robot hMailServer 6.3.4 through 6.3.6 allows an account assigned the serveradmin role with a list of domains - a credential an administrator may create…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00108 · Published 2026-10-21 · No fix listed CWE-863
Priority LOW 35
Incorrect authorization in the REST administration API of Progressive Robot hMailServer 6.3.4 through 6.3.6 allows a remote authenticated user whose credential holds the manage_roles permission in named domains - a full-…
CVSS 3.1HIGH 7.5· Network · Low privileges · No interaction · EPSS 0.00274 · Published 2026-10-21 · No fix listed CWE-863
Priority LOW 35
Incorrect default permissions in the Windows installer of Progressive Robot hMailServer 6.0.0 through 6.3.6 allow a local authenticated user to run code as the mail server's high-privileged accounts when the product is i…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00102 · Published 2026-10-19 · No fix listed CWE-276
Priority LOW 35
Incorrect default permissions in the Windows installer of Progressive Robot hMailServer 6.0.0 through 6.3.5 allow a local authenticated user to read the mail server's data.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00102 · Published 2026-10-08 · Fixed in 6.3.6 CWE-276
Priority LOW 35
Missing authorization on COM objects in Progressive Robot hMailServer 6.0.0 through 6.3.5 (Windows only) lets a local interactive user with no hMailServer credential read and write arbitrary files as the service account…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00107 · Published 2026-10-08 · Fixed in 6.3.6 CWE-862
Priority LOW 35
The Linux live-update apply helper (hmailserver-update) of Progressive Robot hMailServer 6.3.4 and 6.3.5 runs as root on a request file written by the unprivileged hmailserver service account, and took from that request…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00114 · Published 2026-10-08 · Fixed in 6.3.6 CWE-807
Priority LOW 35
Heap-based buffer overflow in the legacy Blowfish decryption routine (BlowFishEncryptor::DecryptFromString) in Progressive Robot hMailServer 6.0.0 through 6.3.3 on Windows allows a local interactive user with no hMailSer…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00162 · Published 2026-10-08 · Fixed in 6.3.4 CWE-122
Priority LOW 34
Missing Host header validation and missing throttling of failed administrator sign-ins in the REST API listener of Progressive Robot hMailServer 6.0.0 through 6.3.5 allow a remote attacker to brute-force the server admin…
CVSS 3.1HIGH 7.5· Network · No auth · User interaction · EPSS 0.00143 · Published 2026-10-08 · Fixed in 6.3.6 CWE-346
Priority LOW 33
Progressive Robot hMailServer 6.0.0 through 6.3.5 fails open when applying DANE (RFC 7672) to outbound SMTP delivery.
CVSS 3.1HIGH 7.4· Network · No auth · No interaction · EPSS 0.00151 · Published 2026-10-08 · Fixed in 6.3.6 CWE-636
Priority LOW 33
Progressive Robot hMailServer 6.0.0 through 6.3.5 does not enforce TLS for outbound SMTP delivery to a mail exchanger whose DNSSEC-validated TLSA records contain no DANE-EE (usage 3) record, contrary to RFC 7672 section…
CVSS 3.1HIGH 7.4· Network · No auth · No interaction · EPSS 0.0015 · Published 2026-10-08 · Fixed in 6.3.6 CWE-319
Priority LOW 32
Not failing securely in the anti-virus attachment-stripping action of Progressive Robot hMailServer 6.0.0 through 6.3.6 allows a remote unauthenticated attacker to have a message that the server's virus scanner found inf…
CVSS 3.1MEDIUM 5.8· Network · No auth · No interaction · EPSS 0.00321 · Published 2026-10-21 · No fix listed CWE-636
Priority LOW 30
Uncontrolled eviction in the pending sign-in tables of the REST API in Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to make other users' OpenID Connect, SAML and passkey sign-ins…
CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.00448 · Published 2026-10-08 · Fixed in 6.3.6 CWE-770
Priority LOW 30
Improper link resolution and external control of file paths in the administrative command-line operations of hMailServer.exe in Progressive Robot hMailServer 6.3.4 and 6.3.5 allow a local attacker who already runs code a…
CVSS 3.1MEDIUM 6.7· Local · Low privileges · User interaction · EPSS 0.00073 · Published 2026-10-08 · Fixed in 6.3.6 CWE-59
Priority LOW 30
Inefficient algorithmic complexity in the SPF macro expansion of Progressive Robot hMailServer 6.3.4 and 6.3.5 allows a remote unauthenticated attacker to consume worker-thread time by publishing a crafted SPF record.
CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.00387 · Published 2026-10-08 · Fixed in 6.3.6 CWE-407
Priority LOW 29
Inefficient complexity in the Sieve filter evaluation of Progressive Robot hMailServer 6.2.24 through 6.3.5 allows an authenticated account holder to make the mail services unavailable with their own filter.
CVSS 3.1MEDIUM 6.5· Network · Low privileges · No interaction · EPSS 0.00307 · Published 2026-10-08 · Fixed in 6.3.6 CWE-1333
Load more