Is CVE-2025-2830 in the CISA KEV catalog?

No. CVE-2025-2830 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-2830?

CVE-2025-2830 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2025-2830?

CVE-2025-2830 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-2830?

Upgrade thunderbird on debian 11 to 1:128.10.1esr-1~deb11u1 or later. Fixes are available for 9 affected products.

CVE & CISA-KEV Catalog

CVE-2025-2830

MEDIUM

6.3

CVSS v3

NVD

Description

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.

CWE-22Path Traversal

How to fix

Remediation Available

thunderbirdDebian

Fixed in:1:128.10.1esr-1~deb11u1CVE-2025-2830

Fixed in:1:128.10.0esr-1~deb12u1CVE-2025-2830

Fixed in:1:128.10.0esr-1CVE-2025-2830

thunderbirdRed Hat / RHEL

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

thunderbirdRocky

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

thunderbird-debuginfoRocky

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

thunderbird-debugsourceRocky

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:128.10.0-1.el10_0RHSA-2025:7507

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_10RHSA-2025:4649

Fixed in:0:128.9.2-1.el8_6RHSA-2025:4665

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_2RHSA-2025:4389

Fixed in:0:128.9.2-1.el8_4RHSA-2025:4654

Fixed in:0:128.9.2-1.el8_8RHSA-2025:4617

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_2RHSA-2025:4513

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_4RHSA-2025:4512

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.10.0-1.el9_6RHSA-2025:7435

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

Fixed in:0:128.9.2-1.el9_5RHSA-2025:4229

Fixed in:0:128.9.2-1.el9_0RHSA-2025:4514

thunderbirdUbuntu

Fixed in:1:128.12.0+build1-0ubuntu0.22.04.1USN-7663-1

Mozilla Thunderbird (en-US)Windows application

Affected:129.0 137.0.2Fixed in:137.0.2Mozilla

Affected:128.9.2Fixed in:128.9.2Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Vendor Advisory2

Other references1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-22 (Path Traversal) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-23897	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-32315	High	8.6	100%	KEV	Fix
CVE-2022-29464	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-26086	Medium	5.3	100%	KEV	Fix
CVE-2021-22005	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-5902	Critical	9.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-13.