Artifex MuPDF 1.17.0 /pdf/pdf-font-add.c memory leak

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Artifex MuPDF 1.17.0 and classified as problematic. This issue affects some unknown processing of the file /pdf/pdf-font-add.c. The manipulation results in memory leak. This vulnerability is known as CVE-2020-26683. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in Artifex MuPDF 1.17.0 (Document Reader Software). Affected is an unknown code of the file /pdf/pdf-font-add.c. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on confidentiality. CVE summarizes:

A memory leak issue discovered in /pdf/pdf-font-add.c in Artifex Software MuPDF 1.17.0 allows attackers to obtain sensitive information.

The weakness was published 08/23/2023. The advisory is shared for download at bugs.ghostscript.com. This vulnerability is traded as CVE-2020-26683 since 10/07/2020. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 270675 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : MuPDF vulnerabilities (USN-7825-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (270675). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 270675
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : MuPDF vulnerabilities (USN-7825-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/07/2020 🔍
08/23/2023 +1050 days 🔍
08/23/2023 +0 days 🔍
10/17/2025 +786 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: bugs.ghostscript.com
Status: Confirmed

CVE: CVE-2020-26683 (🔍)
GCVE (CVE): GCVE-0-2020-26683
GCVE (VulDB): GCVE-100-237780

Entryinfo

Created: 08/23/2023 10:24
Updated: 10/17/2025 17:20
Changes: 08/23/2023 10:24 (39), 09/16/2023 08:30 (11), 09/11/2024 21:40 (16), 10/17/2025 17:20 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!