VulnSocial

CVE-2026-27443Disclosure(seppmail / seppmail)

LOWCVSS 7.5 · HIGH

Signal is active with 4 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control trusted headers.

seppmail CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-20

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • seppmail

Threat summary

  • 4 mentions across 1 observed day

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 2 classified signals
  • 4 total mentions across 1 day

Affected systems

Vendors
seppmail
Products
seppmail

Deep dive

Activity timeline4 mentions / 1d
01234Mentions · 2026-03-04: 4Technical Details · 2026-03-04: 303-04
Signal classification2 categories
Disclosure
250.0%
General
250.0%
Referenced assets5 URLs
Full discourse4 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-27443 SEPPmail Secure Email Gateway Header Injection Vulnerability Befo... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-27443 Customizable Vulnerability Alerts: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=4

    Post summary

    The post briefly announces CVE-2026-27443, a header injection flaw in SEPPmail Secure Email Gateway, and provides a link for more details, but offers no PoC, exploit, patch, or evidence of active exploitation.

    0001037
    4.0K followersView on X
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-27443 📊 Severity: 8.2 🚨 Risk Level: High 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-27443 #CVE-2026-27443 #CVE #High  #CyberSecurity #InfoSec https://t.co/e3gYHOrD1k

    Post summary

    The tweet announces a new CVE with a severity rating, but offers no additional technical or mitigation details.

    0000052
    64 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-27443 SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control truste… https://www.cve.org/CVERecord?id=CVE-2026-27443 ----- Traducción: CVE-2026-27443 SEP… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-27443, describing an improper header sanitization flaw in SEPPmail Secure Email Gateway that could allow attackers to manipulate trusted headers.

    0000022
    55 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-27443 SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control truste… https://www.cve.org/CVERecord?id=CVE-2026-27443

    Post summary

    The CVE describes a header sanitization flaw in SEPPmail Secure Email Gateway that could allow attackers to manipulate trusted headers via S/MIME protected MIME entities.

    00000288
    56.6K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appseppmailseppmail---

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