What’s Vulnerable › Vulnerabilities

CVE-2018-18650

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-10-25 · updated 2026-06-17
• Weakness: CWE-190

Description

An issue was discovered in Xpdf 4.00. XRef::readXRefStream in XRef.cc allows attackers to launch a denial of service (Integer Overflow) via a crafted /Size value in a pdf file, as demonstrated by pdftohtml. This is mainly caused by the program attempting a malloc operation for a large amount of memory.

Affected products

• Xpdf: 4.00

References

• https://forum.xpdfreader.com/viewtopic.php?f=3&t=41219&p=41747#p41747
• https://exchange.xforce.ibmcloud.com/vulnerabilities/152006
• https://forum.xpdfreader.com/viewtopic.php?f=3&t=41219&p=41747#p41747

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