CVE-2023-4255

mediumpriority · track · 22EPSS 0.003 · 25 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (25th) EPSS

CVSS 5.5 · medium

Is it mine?

17 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 1.8 · impact 3.6

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimary

affected products (17)

Products and version ranges known to be affected.

Dell PowerProtect Data Domainall versionscert_bundDEcpe:/a:dell:powerprotect_data_domain:-
Dell PowerProtect Data Domain <7.10.1.40all versionscert_bundDE
Dell PowerProtect Data Domain <7.13.1.10all versionscert_bundDE
Dell PowerProtect Data Domain <7.7.5.50all versionscert_bundDE
Dell PowerProtect Data Domain <8.1.0.0all versionscert_bundDE
Dell PowerProtect Data Domain Management Centerall versionscert_bundDEcpe:/a:dell:powerprotect_data_domain_management_center:-
Dell PowerProtect Data Domain OSall versionscert_bundDEcpe:/o:dell:powerprotect_data_domain_os:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Dell PowerProtect Data Domain< 7.10.1.40cert_bundDE
Dell PowerProtect Data Domain< 7.13.1.10cert_bundDE
Dell PowerProtect Data Domain< 7.7.5.50cert_bundDE
Dell PowerProtect Data Domain< 8.1.0.0cert_bundDE
fedoraproject extra packages for enterprise linux= 8.0nvdUScpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:*:*:*:*:*:*:*:*
fedoraproject fedora= 39nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
tats w3m= 0.5.3+git20230121-1nvdUScpe:2.3:a:tats:w3m:*:*:*:*:*:*:*:*
tats w3m= 0.5.3+git20230121-2nvdUScpe:2.3:a:tats:w3m:*:*:*:*:*:*:*:*
tats w3m= 0.5.3+git20230129nvdUScpe:2.3:a:tats:w3m:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0004w3m: Schwachstelle ermöglicht Denial of ServiceDeutsch2024-01-02csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in w3m ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2024-3377Dell PowerProtect Data Domain: Mehrere SchwachstellenDeutsch2024-11-07csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Dell PowerProtect Data Domain ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen und um nicht näher beschriebene Auswirkungen zu erzielen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2023-12-21modified 2026-06-17

related (16,128)

Related entries.

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In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap on the paged allocation path In __ip6_append_data(), when the paged-allocation branc…
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+16123 more

references (23)

External citations — patches, advisories, analysis.

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