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Fencer Vulns
high 7.5

CVE-2020-16118 json

In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by se…

published 2020-07-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-8084

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

In GNOME Balsa before 2.6.0, a malicious server operator or man in the middle can trigger a NULL pointer dereference and client crash by sending a PREAUTH response to imap_mbox_connect in libbalsa/imap/imap-handle.c.

Patch / fix

  • gnome balsa 2.6.0
  • balsa Debian 14, Debian 13, Debian 12 2.6.0-1

debian advisories DEBIAN-CVE-2020-16118

  • balsa Package Hub 15 SP1 2.5.5-bp151.4.3.1
  • balsa openSUSE Leap 15.1 2.5.5-lp151.3.3.1

opensuse advisories openSUSE-SU-2020:1230-1openSUSE-SU-2020:1207-1

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/balsa/-/issues/23 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/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.