CVE-2016-5827 json
The icaltime_from_string function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (out-of-bounds heap read) vi…
published 2017-01-27 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6762
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.1%
- EPSS 3.1% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
The icaltime_from_string function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a crafted string to the icalparser_parse_string function.
Patch / fix
- libical SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 0.43-1.10.6.1
- libical SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 1.0.1-16.3.1
suse advisories SUSE-SU-2018:0119-1SUSE-SU-2017:1989-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-5827 updated cvss 7.5
libical: Heap buffer over-read in icaltime_from_string
-
Red Hat Enterprise Linux 5 thunderbird Red Hat Enterprise Linux 6 libical, thunderbird Red Hat Enterprise Linux 7 libical, thunderbird, libical-glib, compat-libical1affected: no fix planned “Will not fix”
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
3.07% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).
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
-
- CWE-125 Out-of-bounds Read
References
-
securityfocus.com
/bid/91459
vdb-entry, third-party-advisory
-
openwall.com
/lists/oss-security/2016/06/25/4
mailing-list, third-party-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1281043
issue-tracking
Sources
- CVE List CVE-2016-5827
- NVD CVE-2016-5827
Fencer Intel 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.