CVE-2017-1000232 [Critical] | Security Vulnerability in Ldns

CVE-2017-1000232 is rated High Exploit Risk (84.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.30%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.78% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.52%	2.30%	+1.78%
2	2025-03-30	1.76%	0.52%	-1.24%
3	2025-03-29	—	1.76%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.52%

2.30%

+1.78%

2025-03-30

1.76%

0.52%

-1.24%

2025-03-29

—

1.76%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.0	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.0

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

7.5

2.0

HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

6.4

[email protected]

OS Trackers for CVE-2017-1000232

vendor	priority	summary	link
`alpine`	—	CVE-2017-1000232: 1 source package rows (ldns); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0.	https://security.alpinelinux.org/vuln/CVE-2017-1000232
`debian`	not yet assigned	CVE-2017-1000232 not yet assigned priority: Debian including 1 source packages (ldns), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2017-1000232
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2017-1000232
`suse`	medium	CVE-2017-1000232 severity moderate: SUSE including 18 source package names (ldns-1.7.0-4.3.1, ldns-1.7.0-lp151.4.3.1, …), 42 product×package rows across 23 product lines (SUSE Linux Enterprise Module for Basesystem 15 SP1, SUSE Linux Enterprise Module for Basesystem 15 SP2, … (23 product lines)): Fixed 42.	https://www.suse.com/security/cve/CVE-2017-1000232/
`ubuntu`	medium	CVE-2017-1000232 medium priority: Ubuntu including 1 source packages (ldns), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): released 4, needed 1.	https://ubuntu.com/security/CVE-2017-1000232

Affected software / configurations for CVE-2017-1000232

Vendor	Product	Version	Raw CPE
nlnetlabs	ldns	1.7.0	cpe:2.3:a:nlnetlabs:ldns:1.7.0:::::::*

References for CVE-2017-1000232

URL	Tags
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00000.html
https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=1257	Exploit Vendor Advisory

URL

CVE-2017-1000232

Public exploit references (Exploit-DB) for CVE-2017-1000232

Exploit prediction scoring system (EPSS) score for CVE-2017-1000232

Common vulnerability scoring system (CVSS) metrics for CVE-2017-1000232

Weakness enumeration for CVE-2017-1000232

OS Trackers for CVE-2017-1000232

Affected software / configurations for CVE-2017-1000232

References for CVE-2017-1000232