Vulnerability-Lookup

GHSA-QM4H-VMRQ-638H

Vulnerability from github – Published: 2026-03-21 15:33 – Updated: 2026-03-21 15:33

Details

RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that allows local attackers to crash the application by triggering a structured exception handler (SEH) chain corruption. Attackers can craft a malicious input string with 268 bytes of padding followed by SEH overwrite values and paste it into the Port field to cause denial of service.

Severity ?

6.2 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

6.9 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2019-25569"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-21T13:16:20Z",
    "severity": "MODERATE"
  },
  "details": "RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that allows local attackers to crash the application by triggering a structured exception handler (SEH) chain corruption. Attackers can craft a malicious input string with 268 bytes of padding followed by SEH overwrite values and paste it into the Port field to cause denial of service.",
  "id": "GHSA-qm4h-vmrq-638h",
  "modified": "2026-03-21T15:33:24Z",
  "published": "2026-03-21T15:33:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25569"
    },
    {
      "type": "WEB",
      "url": "https://realterm.sourceforge.io"
    },
    {
      "type": "WEB",
      "url": "https://sourceforge.net/projects/realterm/files"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/46391"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/realterm-serial-terminal-seh-overflow-crash"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2019-25569 (GCVE-0-2019-25569)

Vulnerability from cvelistv5 – Published: 2026-03-21 12:47 – Updated: 2026-03-23 20:09

Title

RealTerm Serial Terminal 2.0.0.70 SEH Overflow Crash

Summary

Severity ?

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

6.2 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/46391	exploit
	https://realterm.sourceforge.io/	product
	https://sourceforge.net/projects/realterm/files/	product
	https://www.vulncheck.com/advisories/realterm-ser…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Realterm	RealTerm: Serial Terminal	Affected: 2.0.0.70

Date Public ?

2019-02-18 00:00

Credits

Alejandra Sánchez

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-25569",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-23T20:07:54.220366Z",
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        }
      ],
      "metrics": [
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          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
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          "tags": [
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          "tags": [
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-QM4H-VMRQ-638H

CVE-2019-25569 (GCVE-0-2019-25569)

Tags

Sightings

Nomenclature