CVE-2023-3417: debian debian_linux
Vulnerability summary
CVE-2023-3417 is a high (CVSS 7.5) vulnerability in debian debian_linux. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 11 · Related 2Timeline
- 24-07-2023PublishedVulnerability first disclosed.
- 18-12-2025Last modifiedVulnerability information updated.
Description
Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerability affects Thunderbird < 115.0.1 and Thunderbird < 102.13.1.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.67%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
0.00 pp
From 0.67% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Debian2 products
- thunderbird< 1:102.13.1-1 | < 1:102.13.1-1~deb11u1 | < 1:102.13.1-1~deb12u1 | < 1:102.13.1-1~deb10u1
- debian_linuxEOL10.0 | 11.0 | 12.0
Mozilla1 product
- thunderbird≥ unspecified, < 115.0.1 | ≥ unspecified, < 102.13.1 | < 102.13.1 | ≥ 115.0, < 115.0.1
Opensuse1 product
- MozillaThunderbird&distro=openSUSE Tumbleweed< 102.13.1-1.1
Ubuntu1 product
- thunderbird< 1:102.15.0+build1-0ubuntu0.20.04.1 | < 1:102.15.0+build1-0ubuntu0.22.04.1
4 vendors · 5 products
References
12 links- bugzilla.mozilla.org/show_bug.cgi?id=1835582Permissions Required
- www.debian.org/security/2023/dsa-5463Third Party Advisory