Buffer overflow in the Network Block Device (nbd) server 2.7.5 and earlier, and 2.8.0 through 2.8.2, allows remote attackers to execute arbitrary code via a large request, which is written past the end of the buffer because nbd does not account for memory taken by the reply header.
Conclusion & alert: CVE-2005-3534 is rated High Risk (65.8/100): CVSS High severity, with high exploitation likelihood (EPSS 13.89%, 94th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.90% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-06-26 | 10.99% | 13.89% | +2.90% |
| 2 | 2025-03-30 | 10.67% | 10.99% | +0.31% |
| 3 | 2025-03-29 | — | 10.67% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2005-3534 not yet assigned priority: Debian including 1 source packages (nbd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2005-3534 |
gentoo
|
high | CVE-2005-3534: 1 GLSA(s) (200512-14), 1 atom(s) (sys-block/nbd); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2005-3534 |
suse
|
high | CVE-2005-3534 severity important: SUSE including 2 source package names (nbd-3.21-1.7, nbd-3.25-160000.3.2), 2 product×package rows across 2 product lines (SUSE Linux Enterprise Server 16.0, openSUSE Tumbleweed): Fixed 2. | https://www.suse.com/security/cve/CVE-2005-3534/ |
ubuntu
|
medium | CVE-2005-3534 medium priority: Ubuntu including 1 source packages (nbd), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2005-3534 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| wouter_verhelst | nbd | <= 2.7.5 | cpe:2.3:a:wouter_verhelst:nbd:*:*:*:*:*:*:*:* |
| wouter_verhelst | nbd | 2.8.0 | cpe:2.3:a:wouter_verhelst:nbd:2.8.0:*:*:*:*:*:*:* |
| wouter_verhelst | nbd | 2.8.2 | cpe:2.3:a:wouter_verhelst:nbd:2.8.2:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://bugs.gentoo.org/show_bug.cgi?id=116314 | |
| http://secunia.com/advisories/18135 | Vendor Advisory |
| http://secunia.com/advisories/18171 | Patch Vendor Advisory |
| http://secunia.com/advisories/18209 | Patch Vendor Advisory |
| http://secunia.com/advisories/18315 | Patch Vendor Advisory |
| http://secunia.com/advisories/18503 | Vendor Advisory |
| http://secunia.com/advisories/43353 | |
| http://secunia.com/advisories/43610 | |
| http://sourceforge.net/mailarchive/forum.php?thread_id=9201144&forum_id=40388 | |
| http://sourceforge.net/project/shownotes.php?release_id=380202&group_id=13229 | Patch |
| http://sourceforge.net/project/shownotes.php?release_id=380210&group_id=13229 | Patch |
| http://www.debian.org/security/2005/dsa-924 | Patch Vendor Advisory |
| http://www.gentoo.org/security/en/glsa/glsa-200512-14.xml | Patch Vendor Advisory |
| http://www.osvdb.org/21848 | Patch |
| http://www.securityfocus.com/bid/16029 | Patch |
| https://usn.ubuntu.com/237-1/ |