CVE-2023-41910: lldpd_project lldpd Out-of-bounds Read
Vulnerability summary
CVE-2023-41910 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in lldpd_project lldpd. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.8% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 05-09-2023PublishedVulnerability first disclosed.
- 30-09-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.15%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.15% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- lldpd< 1.0.11-1+deb11u2 | < 1.0.3-1+deb10u2 | < 1.0.16-1+deb12u1 | < 1.0.17-1
Lldpd_project1 product
- lldpd< 1.0.17
Opensuse1 product
- lldpd&distro=openSUSE Tumbleweed< 1.0.23-1.1
Ubuntu1 product
- lldpdAll versions (No fix recorded)
4 vendors · 4 products
References
9 links
- www.debian.org/security/2023/dsa-5505Vendor Advisory
