CVE-2026-111269CWE-125

CVE-2026-111269

Medium · published October 16, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
2.3
In the wild
Unconfirmed
What it is

libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00129 · 2.3th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-16T02:19Z
References (6)
https://github.com/libical/libical · [email protected]https://github.com/libical/libical/blob/9cfca65c122fa23b9680a28e0c9225a2fd015fc5/src/libical/icalvalue.c#L1608-L1645 · [email protected]https://github.com/libical/libical/commit/d753885ce2de7c105d6b8c405aa7aee1d98ad8de · [email protected]https://github.com/libical/libical/pull/1455 · [email protected]https://hackmd.io/@haind-pwn/libical-icalvalue-decode-ical-string-oob-read · [email protected]https://www.vulncheck.com/advisories/libical-through-4.0.6-heap-out-of-bounds-read-via-icalvalue-decode-ical-string · [email protected]
EPSS history
Timeline
  • 17 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 15 OCT 21:43Z
    libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string
    cvelistv5
  • 15 OCT 21:43Z
    libical through 4.0.6 Heap Out-of-Bounds Read via icalvalue_decode_ical_string
    cvelistv5