CVE-2020-26535
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to...
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).
- Record
CVE-2020-26535- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).
- Record
CVE-2020-26535- Updated
- 2026-11-02
EUVDEUVD-2020-19080 No score
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).
- Record
EUVD-2020-19080- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j4q4-v7ww-5hxm No score
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to...
An issue was discovered in Foxit Reader and PhantomPDF before 10.1. If TslAlloc attempts to allocate thread local storage but obtains an unacceptable index value, V8 throws an exception that leads to a write access violation (and read access violation).
- Record
GHSA-j4q4-v7ww-5hxm- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-26535 is a critical vulnerability (CVSS 9.8) in Foxitsoftware Foxit Reader, published October 2, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.72%, the 77th percentile. No source names a fixed version.