Is there a public exploit for CVE-2026-70368?

No public exploit for CVE-2026-70368 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-70368?

CVE-2026-70368 scores CVSS 6.5 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.35%.

What does CVE-2026-70368 affect?

CVE-2026-70368 affects Mobi-Com Polska Sp. z o.o. stunnel.

6.5 Medium

A stack-based out-of-bounds read vulnerability exists in the "svlog" function of stunnel, when handling oversized log messages via…

CVE-2026-70368

A stack-based out-of-bounds read vulnerability exists in the "svlog" function of stunnel, when handling oversized log messages via "vsnprintf". A remote attacker with network access to a stunnel service can send protocol inputs that trigger a log message longer than 1024 bytes, leading to an out-of-bounds stack read and a potential crash. In certain corner cases, the same vulnerability could be used to replace a series of trailing "\n" characters with "\0".

Assessment

CVSS: 6.5 (v3.1)
Severity: Medium
EPSS: 0.35% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 August 2026
Last updated: 5 November 2026
Affected: Mobi-Com Polska Sp. z o.o. · stunnel
Assigner: redhat

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

At the source

EUVD (ENISA)

References

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