No exploitation reportedFix available

CVE-2019-13721

Q: Is CVE-2019-13721 actively exploited?

Active exploitation of CVE-2019-13721 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-13721?

CVE-2019-13721 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2019-11-25
Fixed in78.0.3904.87
WeaknessCWE-416 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Use after free in PDFium in Google Chrome prior to 78.0.3904.87 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Timeline

dates in UTC

2019-11-2515:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-13721?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-13721?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Google chrome

Branch	Affected	Fixed in	Source
78.0	< 78.0.3904.87	78.0.3904.87	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Google chrome to 78.0.3904.87

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-05-28
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.18.82026-05-28
NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-416, CWE-7872026-05-28
NVDweakness (CWE)CWE-416, CWE-787read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2019-11-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-13721?

Use after free in PDFium in Google Chrome prior to 78.0.3904.87 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Is CVE-2019-13721 actively exploited?

Active exploitation of CVE-2019-13721 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-13721?

CVE-2019-13721 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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