CVE-2018-20072 — Insufficient data validation in PDF in Google Chrome prior to 73

Insufficient data validation in PDF in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to perform out of bounds memory access via a crafted PDF file. (Chromium security severity: Low)

01What is this vulnerability?

Insufficient data validation in PDF in Google Chrome prior to 73.0.3683.75 allowed a remote attacker to perform out of bounds memory access via a crafted PDF file. (Chromium security severity: Low)

02Affected products

Vendor	Product	Versions
Google	Chrome	73.0.3683.75

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-09-23T21:56:31.434Z
• Last modified: 2025-03-25T16:20:45.495Z

09References

• issues.chromium.org — https://issues.chromium.org/issues/40093560