Realterm Serial Terminal 2.0.0.70 Port overlap between protected memory ranges

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability has been found in Realterm Serial Terminal 2.0.0.70 and classified as problematic. This vulnerability affects unknown code. The manipulation of the argument Port leads to improper handling of overlap between protected memory ranges. This vulnerability is referenced as CVE-2019-25570. The attack can only be performed from a local environment. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Realterm Serial Terminal 2.0.0.70 and classified as problematic. This issue affects an unknown part. The manipulation of the argument Port with an unknown input leads to a improper handling of overlap between protected memory ranges vulnerability. Using CWE to declare the problem leads to CWE-1260. The product allows address regions to overlap, which can result in the bypassing of intended memory protection. Impacted is availability. The summary by CVE is:

RealTerm Serial Terminal 2.0.0.70 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Port field. Attackers can paste a buffer of 1000 characters into the Port input field and click the open button to trigger a crash.

The weakness was published by Alejandra Sánchez as 46390. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2019-25570 since 03/21/2026. The exploitation is known to be easy. Attacking locally is a requirement. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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 databases at Exploit-DB (46390) and EUVD (EUVD-2019-19888). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 5.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Improper handling of overlap between protected memory ranges
CWE: CWE-1260 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/21/2026 Advisory disclosed
03/21/2026 +0 days CVE reserved
03/21/2026 +0 days VulDB entry created
03/27/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: 46390
Researcher: Alejandra Sánchez
Status: Not defined

CVE: CVE-2019-25570 (🔒)
GCVE (CVE): GCVE-0-2019-25570
GCVE (VulDB): GCVE-100-352355
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/21/2026 15:55
Updated: 03/27/2026 16:28
Changes: 03/21/2026 15:55 (79), 03/21/2026 17:13 (1), 03/27/2026 16:28 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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