The dns_db_findrdataset function in db.c in named in ISC BIND 9.4 before 9.4.3-P3, 9.5 before 9.5.1-P3, and 9.6 before 9.6.1-P1, when config
Noroxi assessment
Priority: Monitor (action score 21/100)
- Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 12.6% (FIRST EPSS); higher than 96.2% of all records.
- Fixed version: bind9 (Debian:12) 1:9.6.1.dfsg.P1-1; bind9 (Debian:4.0) 1:9.3.4-2etch5; bind9 (Debian:5.0) 1:9.5.1.dfsg.P3-1.
Low priority for now. Upgrade to bind9 (Debian:12) 1:9.6.1.dfsg.P1-1; bind9 (Debian:4.0) 1:9.3.4-2etch5; bind9 (Debian:5.0) 1:9.5.1.dfsg.P3-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The dns_db_findrdataset function in db.c in named in ISC BIND 9.4 before 9.4.3-P3, 9.5 before 9.5.1-P3, and 9.6 before 9.6.1-P1, when configured as a master server, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via an ANY record in the prerequisite section of a crafted dynamic update message.
- Published
- Jul 29, 2009
- Updated
- Jun 16, 2026
- EPSS
- 12.6% · 96th percentile
- CWE
- CWE-16
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 4 / 30 · 12.6%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| isc | bind | cpe:2.3:a:isc:bind |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- isc bind9.4
- isc bind9.4.0
- isc bind9.4.1
- isc bind9.4.2
- isc bind9.4.3
- isc bind9.5
- isc bind9.5.0
- isc bind9.6
- isc bind9.6.0
- isc bind9.6.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | bind9 | before 1:9.6.1.dfsg.P1-1 | 1:9.6.1.dfsg.P1-1 |
| Debian:4.0 | bind9 | before 1:9.3.4-2etch5 | 1:9.3.4-2etch5 |
| Debian:5.0 | bind9 | before 1:9.5.1.dfsg.P3-1 | 1:9.5.1.dfsg.P3-1 |
| openSUSE:Tumbleweed | bind | before 9.10.3P4-21.1 | 9.10.3P4-21.1 |
| Red Hat:enterprise_linux:3::as | bind | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:3::as | bind-chroot | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:3::as | bind-debuginfo | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:3::as | bind-devel | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:3::as | bind-libs | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:3::as | bind-utils | before 20:9.2.4-25.el3 | 20:9.2.4-25.el3 |
| Red Hat:enterprise_linux:4::as | bind | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:4::as | bind-chroot | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:4::as | bind-debuginfo | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:4::as | bind-devel | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:4::as | bind-libs | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:4::as | bind-utils | before 20:9.2.4-30.el4_8.4 | 20:9.2.4-30.el4_8.4 |
| Red Hat:enterprise_linux:5::client | bind-libs | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client | bind-sdb | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client | bind-utils | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client_workstation | bind | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client_workstation | bind-chroot | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client_workstation | bind-debuginfo | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client_workstation | bind-devel | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
| Red Hat:enterprise_linux:5::client_workstation | bind-libbind-devel | before 30:9.3.4-10.P1.el5_3.3 | 30:9.3.4-10.P1.el5_3.3 |
+1
Same product
isc: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-5477named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion faKEV90Now
- CVE-2016-2776buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses,57Plan
- CVE-2016-1286named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (assertion failure an53Plan
Published before and after this one in the same product
- ← EarlierCVE-2009-0025Jan 7, 2009 · BIND 9.6.0, 9.5.1, 9.5.0, 9.4.3, and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows rem29Monitor
- ← EarlierCVE-2009-0265Jan 26, 2009 · Internet Systems Consortium (ISC) BIND 9.6.0 and earlier does not properly check the return value from the OpenSSL EVP_VerifyFinal function,31Monitor
- Later →CVE-2009-4022Nov 25, 2009 · Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta befor12Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:bind9 | 1:9.6.1.dfsg.P1-1 · Debian:12 | Package registry (OSV) |
| opensuse:bind | 9.10.3P4-21.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:bind | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:bind-chroot | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:bind-debuginfo | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:bind-devel | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:bind-libbind-devel | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
| red hat:bind-libs | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:bind-sdb | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:bind-utils | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client | Package registry (OSV) |
| red hat:caching-nameserver | 30:9.3.4-10.P1.el5_3.3 · Red Hat:enterprise_linux:5::client_workstation | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2009-07-30 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoCsame day
- TodayOct 18, 2026+6290 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-16 · ConfigurationCVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- ftp://ftp.sco.com/pub/unixware7/714/security/p535243_uw7/p535243b.txt
- aix.software.ibm.com/aix/efixes/security/bind_advisory.asc
- bugs.debian.org/cgi-bin/bugreport.cgi?bug=538975
- secunia.com/advisories/36035
- secunia.com/advisories/36038
- secunia.com/advisories/36050
- secunia.com/advisories/36053
- secunia.com/advisories/36056
- secunia.com/advisories/36063
- secunia.com/advisories/36086
- secunia.com/advisories/36098
- secunia.com/advisories/36192
- secunia.com/advisories/37471
- secunia.com/advisories/39334
- sunsolve.sun.com/search/document.do?assetkey=1-26-264828-1
- sunsolve.sun.com/search/document.do?assetkey=1-77-1020788.1-1
- up2date.astaro.com/2009/08/up2date_7505_released.html
- wiki.rpath.com/Advisories:rPSA-2009-0113
- www.kb.cert.org/vuls/id/725188
Vendor advisories and official records. Exploit/PoC links are deliberately left out.