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Vulnerability record · CVE-2020-18839 · published 22 August 2023

CVE-2020-18839: Freedesktop poppler out-of-bounds write vulnerability

Freedesktop · Poppler

Buffer Overflow vulnerability in HtmlOutputDev::page in poppler 0.75.0 allows attackers to cause a denial of service.

6.5 CVSS 3.1 Medium EPSS 0.65% · top 50.3% CWE-787 · Out-of-bounds write
6.5CVSS 3.1 base score
0.65%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Buffer Overflow vulnerability in HtmlOutputDev::page in poppler 0.75.0 allows attackers to cause a denial of service.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.freedesktop.org/poppler/poppler/issues/742 ExploitIssue TrackingVendor Advisory
https://gitlab.freedesktop.org/poppler/poppler/issues/742 ExploitIssue TrackingVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2021-30860Apple PDF integer overflow allows arbitrary code executionAn integer overflow in PDF processing was fixed by improved input validation in Apple iOS, iPadOS, macOS, watchOS and related PDF libraries (xpdf, po…KEVEPSS 76%analysed9.8CVE-2019-9631Freedesktop poppler out-of-bounds read vulnerabilityPoppler 0.74.0 has a heap-based buffer over-read in the CairoRescaleBox.cc downsample_row_box_filter function.EPSS 3.5%8.8CVE-2018-21009Freedesktop poppler integer overflow vulnerabilityPoppler before 0.66.0 has an integer overflow in Parser::makeStream in Parser.cc.EPSS 1.9%8.8CVE-2019-12293Freedesktop poppler out-of-bounds read vulnerabilityIn Poppler through 0.76.1, there is a heap-based buffer over-read in JPXStream::init in JPEG2000Stream.cc via data with inconsistent heights or width…EPSS 2.1%8.8CVE-2019-10872Freedesktop poppler out-of-bounds read vulnerabilityAn issue was discovered in Poppler 0.74.0. There is a heap-based buffer over-read in the function Splash::blitTransparent at splash/Splash.cc.EPSS 2.7%8.8CVE-2019-9545Freedesktop poppler vulnerabilityAn issue was discovered in Poppler 0.74.0. A recursive function call, in JBIG2Stream::readTextRegion() located in JBIG2Stream.cc, can be triggered by…EPSS 1.8%8.8CVE-2019-9543Freedesktop poppler vulnerabilityAn issue was discovered in Poppler 0.74.0. A recursive function call, in JBIG2Stream::readGenericBitmap() located in JBIG2Stream.cc, can be triggered…EPSS 3.3%8.8CVE-2019-9200Freedesktop poppler out-of-bounds write vulnerabilityA heap-based buffer underwrite exists in ImageStream::getLine() located at Stream.cc in Poppler 0.74.0 that can (for example) be triggered by sending…EPSS 3.5%

Source: NIST National Vulnerability Database (record CVE-2020-18839), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.