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Fencer Vulns
critical 9.8

CVE-2019-11395 in the critical feed json

A buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long string, as demonstrated by SMTP RCPT TO,…

published 2019-04-21 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3073

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.6%
EPSS 14.6% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

A buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code via a long string, as demonstrated by SMTP RCPT TO, POP3 USER, POP3 LIST, POP3 TOP, or POP3 RETR.

Exploit prediction

14.57% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • packetstormsecurity.com http://packetstormsecurity.com/files/152502/MailCarrier-2.51-RCPT-TO-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/152506/MailCarrier-2.51-TOP-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/152505/MailCarrier-2.51-LIST-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/152504/MailCarrier-2.51-USER-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/152530/MailCarrier-2.51-RETR-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/152502/MailCarrier-2.51-RCPT-TO-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/152504/MailCarrier-2.51-USER-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/152505/MailCarrier-2.51-LIST-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/152506/MailCarrier-2.51-TOP-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/152530/MailCarrier-2.51-RETR-Buffer-Overflow.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.