Vulnerability-Lookup

CVE-2025-2830 (GCVE-0-2025-2830)

Vulnerability from cvelistv5 – Published: 2025-04-15 15:06 – Updated: 2026-04-13 14:28

Title

Information Disclosure of /tmp directory listing

Summary

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.

Severity

6.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-15 17:53 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

mozilla mitre root

References

3 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1956379
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

1 product

Vendor	Product	Version	CPE status
Mozilla	Thunderbird	Unaffected: 128.9.2 , ≤ 128.* (rpm) Unaffected: 137.0.2 , ≤ * (rpm)	guessed

Credits

Dario Weißer

Show details on NVD website

JSON

To clipboard

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            }
          ],
          "value": "By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim\u0027s system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2."
        }
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          },
          {
            "lang": "es",
            "value": "Al manipular un nombre de archivo mal formado para un archivo adjunto en un mensaje multiparte, un atacante puede enga\u00f1ar a Thunderbird para que incluya la lista de directorio /tmp al reenviar o editar el mensaje como nuevo. Esta vulnerabilidad podr\u00eda permitir a los atacantes divulgar informaci\u00f3n confidencial del sistema de la v\u00edctima. Esta vulnerabilidad no se limita a Linux; tambi\u00e9n se ha observado un comportamiento similar en Windows. Esta vulnerabilidad afecta a Thunderbird (versi\u00f3n anterior a la 137.0.2) y a Thunderbird (versi\u00f3n anterior a la 128.9.2)."
          }
        ],
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          },
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          },
          {
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      "title": "SUSE CVE CVE-2025-2830",
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            {
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}

RHSA-2025:7435

Vulnerability from csaf_redhat - Published: 2025-05-13 14:01 - Updated: 2026-06-28 09:27

Summary

Red Hat Security Advisory: thunderbird security update

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2025-2830.

CVE-2025-2830

A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system.

6.1 (Medium)


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

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2025:7435

Open the full advisory

RHSA-2025:7507

Vulnerability from csaf_redhat - Published: 2025-05-13 16:05 - Updated: 2026-06-28 09:27

Summary

Red Hat Security Advisory: thunderbird security update

Severity

Important

Scope

8 vulnerabilities in this advisory, including CVE-2025-2830.

CVE-2025-2830

6.1 (Medium)


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

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2025:7507

Open the full advisory

SUSE-SU-2025:1366-1

Vulnerability from csaf_suse - Published: 2025-04-24 12:42 - Updated: 2025-04-24 12:42

Summary

Security update for MozillaThunderbird

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2025-2830.

CVE-2025-2830

6.1 (Medium)


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

Recommended: 24 products

Open the full advisory

UBUNTU-CVE-2025-2830 (CVE-2025-2830)

Vulnerability from osv_ubuntu – Published: 2025-04-15 15:16 – Updated: 2026-09-16 11:25 – Source website

Details

Severity

6.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-2830	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-2830	REPORT
	https://www.mozilla.org/en-US/security/advisories…	REPORT
	https://bugzilla.mozilla.org/show_bug.cgi?id=1956379	REPORT
	https://www.mozilla.org/security/advisories/mfsa2…	REPORT
	https://www.mozilla.org/security/advisories/mfsa2…	REPORT
	https://ubuntu.com/security/notices/USN-7663-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "thunderbird",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "thunderbird",
        "purl": "pkg:deb/ubuntu/thunderbird@1:128.12.0+build1-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:128.12.0+build1-0ubuntu0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:91.1.2+build1-0ubuntu1",
        "1:91.3.0+build2-0ubuntu1",
        "1:91.3.1+build1-0ubuntu1",
        "1:91.3.2+build1-0ubuntu1",
        "1:91.4.0+build1.1-0ubuntu1",
        "1:91.4.0+build2-0ubuntu1",
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        "1:91.5.1+build1-0ubuntu1",
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        "1:91.7.0+build1-0ubuntu1",
        "1:91.7.0+build2-0ubuntu1",
        "1:91.8.0+build2-0ubuntu1",
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        "1:91.11.0+build2-0ubuntu0.22.04.1",
        "1:102.2.2+build1-0ubuntu0.22.04.1",
        "1:102.4.2+build2-0ubuntu0.22.04.1",
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        "1:102.9.0+build1-0ubuntu0.22.04.1",
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        "1:102.11.0+build1-0ubuntu0.22.04.1",
        "1:102.13.0+build1-0ubuntu0.22.04.1",
        "1:102.15.0+build1-0ubuntu0.22.04.1",
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        "1:115.10.1+build1-0ubuntu0.22.04.1",
        "1:115.11.0+build2-0ubuntu0.22.04.1",
        "1:115.12.0+build3-0ubuntu0.22.04.1",
        "1:115.13.0+build5-0ubuntu0.22.04.1",
        "1:115.15.0+build1-0ubuntu0.22.04.1",
        "1:115.16.0+build2-0ubuntu0.22.04.1",
        "1:115.18.0+build1-0ubuntu0.22.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim\u0027s system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.",
  "id": "UBUNTU-CVE-2025-2830",
  "modified": "2026-09-16T11:25:26Z",
  "published": "2025-04-15T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-2830"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-2830"
    },
    {
      "type": "REPORT",
      "url": "https://www.mozilla.org/en-US/security/advisories/mfsa2025-27/#CVE-2025-2830"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1956379"
    },
    {
      "type": "REPORT",
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-26/"
    },
    {
      "type": "REPORT",
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-27/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7663-1"
    }
  ],
  "related": [
    "USN-7663-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-2830"
  ]
}

WID-SEC-W-2025-0803

Vulnerability from csaf_certbund - Published: 2025-04-15 22:00 - Updated: 2025-06-30 22:00

Summary

Mozilla Thunderbird und Thunderbird ESR: Mehrere Schwachstellen

Severity

Mittel

Scope

3 vulnerabilities in this advisory, including CVE-2025-2830.

CVE-2025-2830

Known affected: 9 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-2830 (GCVE-0-2025-2830)

RHSA-2025:7435

RHSA-2025:7507

SUSE-SU-2025:1366-1

UBUNTU-CVE-2025-2830 (CVE-2025-2830)

WID-SEC-W-2025-0803

Tags

Sightings

Nomenclature

Related by attack behaviour