CVE-2023-3748

highpriority · track · 30EPSS 0.008 · 56 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.78% (56th) EPSS

CVSS 7.5 · high

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to enter an infinite loop and cause a denial of service.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.5–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.13.5lowCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.13.5lowCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Lsecondary · secalert@redhat.com USexploitability 2.1 · impact 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-835USprimaryCWE-835US

affected products (7)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
FRRouting Project FRRouting <8.5all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
FRRouting Project FRRouting< 8.5cert_bundDE
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
Сообщество свободного программного обеспечения FRRouting≤ 8.5fstec_bduRU
frrouting frrouting< 8.5nvdUScpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1787FRRouting Project FRRouting: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-07-18csaf · cert_bundDE
Ein Angreifer kann eine Schwachstelle in FRRouting Project FRRouting ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2023-07-24modified 2026-06-17

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+1371 more

references (9)

External citations — patches, advisories, analysis.

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