What is CVE-2018-21009?

CVE-2018-21009 is a high-severity vulnerability in Freedesktop Poppler, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2019-09-05.

How severe is CVE-2018-21009?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Freedesktop Poppler

CVE-2018-21009

Poppler before 0.66.0 has an integer overflow in Parser::makeStream in Parser.cc.

Vulnerability class: Integer Overflow

Published 2019-09-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Freedesktop Poppler

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

gitlab.freedesktop.org/poppler/poppler/commit/0868c499a9f5f37f8df5c9fef03c37496… (Patch)
lists.debian.org/debian-lts-announce/2019/09/msg00033.html (mailing-list)
lists.debian.org/debian-lts-announce/2020/07/msg00018.html (mailing-list)

Frequently asked questions

What is CVE-2018-21009?: CVE-2018-21009 is a high-severity vulnerability in Freedesktop Poppler, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2019-09-05.
How severe is CVE-2018-21009?: High severity. CVSS v3 base score is 8.8 out of 10.