The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and 9.9.4b1, and DNSco BIND 9.9.3-S1 before 9.9.3-S1-P1 and 9.9.4-S1b1, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query with a malformed RDATA section that is not properly handled during construction of a log message, as exploited in the wild in July 2013.
Conclusion & alert: CVE-2013-4854 is rated Moderate Risk (60.6/100): CVSS High severity, with high exploitation likelihood (EPSS 34.15%, 98th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 2026-06-15 | 51.15% | 34.15% | -17.00% |
| 2 | 2026-04-18 | 53.70% | 51.15% | -2.55% |
| 3 | 2026-03-04 | — | 53.70% | — |
Full EPSS history (47 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 2.0 | HIGH |
|
10.0 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2013-4854 not yet assigned priority: Debian including 1 source packages (bind9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2013-4854 |
gentoo
|
normal | CVE-2013-4854: 1 GLSA(s) (201401-34), 1 atom(s) (net-dns/bind); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4854 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2013-4854 |
suse
|
medium | CVE-2013-4854 severity moderate: SUSE including 155 source package names (bind-9.10.3P4-21.1, bind-9.11.2-1.24, …), 242 product×package rows across 38 product lines (SUSE Linux Enterprise Desktop 11 SP2, SUSE Linux Enterprise Desktop 11 SP3, … (38 product lines)): Fixed 242. | https://www.suse.com/security/cve/CVE-2013-4854/ |
ubuntu
|
high | CVE-2013-4854 high priority: Ubuntu including 1 source packages (bind9), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): released 5. | https://ubuntu.com/security/CVE-2013-4854 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:*:*:*:*:*:*:* |
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:b1:*:*:*:*:*:* |
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:p1:*:*:*:*:*:* |
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:p2:*:*:*:*:*:* |
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.0 | cpe:2.3:a:isc:bind:9.7.0:rc2:*:*:*:*:*:* |
| isc | bind | 9.7.1 | cpe:2.3:a:isc:bind:9.7.1:*:*:*:*:*:*:* |
| isc | bind | 9.7.1 | cpe:2.3:a:isc:bind:9.7.1:p1:*:*:*:*:*:* |
| isc | bind | 9.7.1 | cpe:2.3:a:isc:bind:9.7.1:p2:*:*:*:*:*:* |
| isc | bind | 9.7.1 | cpe:2.3:a:isc:bind:9.7.1:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.2 | cpe:2.3:a:isc:bind:9.7.2:*:*:*:*:*:*:* |
| isc | bind | 9.7.2 | cpe:2.3:a:isc:bind:9.7.2:p1:*:*:*:*:*:* |
| isc | bind | 9.7.2 | cpe:2.3:a:isc:bind:9.7.2:p2:*:*:*:*:*:* |
| isc | bind | 9.7.2 | cpe:2.3:a:isc:bind:9.7.2:p3:*:*:*:*:*:* |
| isc | bind | 9.7.2 | cpe:2.3:a:isc:bind:9.7.2:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.3 | cpe:2.3:a:isc:bind:9.7.3:*:*:*:*:*:*:* |
| isc | bind | 9.7.3 | cpe:2.3:a:isc:bind:9.7.3:b1:*:*:*:*:*:* |
| isc | bind | 9.7.3 | cpe:2.3:a:isc:bind:9.7.3:p1:*:*:*:*:*:* |
| isc | bind | 9.7.3 | cpe:2.3:a:isc:bind:9.7.3:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.4 | cpe:2.3:a:isc:bind:9.7.4:*:*:*:*:*:*:* |
| isc | bind | 9.7.4 | cpe:2.3:a:isc:bind:9.7.4:b1:*:*:*:*:*:* |
| isc | bind | 9.7.4 | cpe:2.3:a:isc:bind:9.7.4:p1:*:*:*:*:*:* |
| isc | bind | 9.7.4 | cpe:2.3:a:isc:bind:9.7.4:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.5 | cpe:2.3:a:isc:bind:9.7.5:*:*:*:*:*:*:* |
| isc | bind | 9.7.5 | cpe:2.3:a:isc:bind:9.7.5:b1:*:*:*:*:*:* |
| isc | bind | 9.7.5 | cpe:2.3:a:isc:bind:9.7.5:rc1:*:*:*:*:*:* |
| isc | bind | 9.7.5 | cpe:2.3:a:isc:bind:9.7.5:rc2:*:*:*:*:*:* |
| isc | bind | 9.7.6 | cpe:2.3:a:isc:bind:9.7.6:*:*:*:*:*:*:* |
| isc | bind | 9.7.6 | cpe:2.3:a:isc:bind:9.7.6:p1:*:*:*:*:*:* |
| isc | bind | 9.7.6 | cpe:2.3:a:isc:bind:9.7.6:p2:*:*:*:*:*:* |
| isc | bind | 9.7.7 | cpe:2.3:a:isc:bind:9.7.7:*:*:*:*:*:*:* |
| suse | suse_linux_enterprise_software_development_kit | 11.0 | cpe:2.3:a:suse:suse_linux_enterprise_software_development_kit:11.0:sp2:*:*:*:*:*:* |
| suse | suse_linux_enterprise_software_development_kit | 11.0 | cpe:2.3:a:suse:suse_linux_enterprise_software_development_kit:11.0:sp3:*:*:*:*:*:* |
| novell | suse_linux | 11 | cpe:2.3:o:novell:suse_linux:11:*:server:*:*:*:*:* |
| isc | dnsco_bind | 9.9.3 | cpe:2.3:a:isc:dnsco_bind:9.9.3:s1:*:*:*:*:*:* |
| isc | dnsco_bind | 9.9.4 | cpe:2.3:a:isc:dnsco_bind:9.9.4:s1b1:*:*:*:*:*:* |
| opensuse | opensuse | 11.4 | cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:*:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:a1:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:a2:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:a3:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:b1:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:b2:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:rc1:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:rc2:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:rc3:*:*:*:*:*:* |
| isc | bind | 9.9.0 | cpe:2.3:a:isc:bind:9.9.0:rc4:*:*:*:*:*:* |
| isc | bind | 9.9.1 | cpe:2.3:a:isc:bind:9.9.1:*:*:*:*:*:*:* |
| isc | bind | 9.9.1 | cpe:2.3:a:isc:bind:9.9.1:p1:*:*:*:*:*:* |
| isc | bind | 9.9.1 | cpe:2.3:a:isc:bind:9.9.1:p2:*:*:*:*:*:* |
| isc | bind | 9.9.2 | cpe:2.3:a:isc:bind:9.9.2:*:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:*:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:b1:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:b2:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:p1:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:rc1:*:*:*:*:*:* |
| isc | bind | 9.9.3 | cpe:2.3:a:isc:bind:9.9.3:rc2:*:*:*:*:*:* |
| freebsd | freebsd | 8.0 | cpe:2.3:o:freebsd:freebsd:8.0:*:*:*:*:*:*:* |
| freebsd | freebsd | 8.1 | cpe:2.3:o:freebsd:freebsd:8.1:*:*:*:*:*:*:* |
| freebsd | freebsd | 8.2 | cpe:2.3:o:freebsd:freebsd:8.2:*:*:*:*:*:*:* |
| freebsd | freebsd | 8.3 | cpe:2.3:o:freebsd:freebsd:8.3:*:*:*:*:*:*:* |
| freebsd | freebsd | 8.4 | cpe:2.3:o:freebsd:freebsd:8.4:*:*:*:*:*:*:* |
| freebsd | freebsd | 9.0 | cpe:2.3:o:freebsd:freebsd:9.0:*:*:*:*:*:*:* |
| freebsd | freebsd | 9.1 | cpe:2.3:o:freebsd:freebsd:9.1:*:*:*:*:*:*:* |
| freebsd | freebsd | 9.1 | cpe:2.3:o:freebsd:freebsd:9.1:p4:*:*:*:*:*:* |
| freebsd | freebsd | 9.1 | cpe:2.3:o:freebsd:freebsd:9.1:p5:*:*:*:*:*:* |
| freebsd | freebsd | 9.2 | cpe:2.3:o:freebsd:freebsd:9.2:prerelease:*:*:*:*:*:* |
| freebsd | freebsd | 9.2 | cpe:2.3:o:freebsd:freebsd:9.2:rc1:*:*:*:*:*:* |
| freebsd | freebsd | 9.2 | cpe:2.3:o:freebsd:freebsd:9.2:rc2:*:*:*:*:*:* |
| mandriva | business_server | 1.0 | cpe:2.3:o:mandriva:business_server:1.0:*:*:*:*:*:*:* |
| mandriva | enterprise_server | 5.0 | cpe:2.3:o:mandriva:enterprise_server:5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 5 | cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 6.0 | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:*:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:a1:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:b1:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:p1:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:p2:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:p4:*:*:*:*:*:* |
| isc | bind | 9.8.0 | cpe:2.3:a:isc:bind:9.8.0:rc1:*:*:*:*:*:* |