Gnuplot 5.5 print_set_output double free

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Gnuplot 5.5. This vulnerability affects the function print_set_output. Executing a manipulation can lead to double free. This vulnerability is handled as CVE-2020-25559. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability was found in Gnuplot 5.5. It has been declared as critical. This vulnerability affects the function print_set_output. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

gnuplot 5.5 is affected by double free when executing print_set_output. This may result in context-dependent arbitrary code execution.

The weakness was released 09/16/2020. This vulnerability was named CVE-2020-25559 since 09/14/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 240563 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : Gnuplot vulnerabilities (USN-7589-1)), 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 (240563). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 240563
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS : Gnuplot vulnerabilities (USN-7589-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/14/2020 🔍
09/16/2020 +2 days 🔍
09/16/2020 +0 days 🔍
08/14/2025 +1793 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-25559 (🔍)
GCVE (CVE): GCVE-0-2020-25559
GCVE (VulDB): GCVE-100-161296

Entryinfo

Created: 09/16/2020 16:38
Updated: 08/14/2025 16:21
Changes: 09/16/2020 16:38 (34), 09/16/2020 16:43 (17), 06/26/2025 18:42 (17), 08/14/2025 16:21 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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