CVE-2016-4912

Exp

The _xrealloc function in xlsp_xmalloc.c in OpenSLP 2.0.0 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a large number of crafted packets, which triggers a memory allocation failure.

Published: 2017-03-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-4912 is rated High Exploit Risk (77.2/100): CVSS High severity, with high exploitation likelihood (EPSS 5.36%, 92th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-4912

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-4912

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 2026-07-01 5.26% 5.36% +0.10%
2 2026-06-15 0.78% 5.26% +4.47%
3 2025-03-30 — 0.78% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-4912

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2016-4912

OS Trackers for CVE-2016-4912

vendor priority summary link
gentoo normal CVE-2016-4912: 1 GLSA(s) (201707-05), 1 atom(s) (net-libs/openslp); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-4912
redhat medium — https://access.redhat.com/security/cve/CVE-2016-4912
suse medium CVE-2016-4912 severity moderate: SUSE including 283 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 453 product×package rows across 81 product lines (Container caasp/v4/openldap, SUSE CaaS Platform 4.5, … (81 product lines)): Known Affected 231, Known Not Affected 127, Fixed 95. https://www.suse.com/security/cve/CVE-2016-4912/
ubuntu low CVE-2016-4912 low priority: Ubuntu including 1 source packages (openslp-dfsg), 5 status rows across 5 suites (precise, trusty, upstream, wily, xenial): not-affected 3, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2016-4912

Affected software / configurations for CVE-2016-4912

Vendor Product Version Raw CPE
openslp openslp 2.0.0 cpe:2.3:a:openslp:openslp:2.0.0:*:*:*:*:*:*:*

References for CVE-2016-4912

URL Tags
http://www.openwall.com/lists/oss-security/2016/05/18/6 Mailing List Third Party Advisory
http://www.securitytracker.com/id/1035916 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1329295 Exploit Issue Tracking Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201707-05
cvelogic Threat Intelligence