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CVE-2017-11696

26
FAUCET Score

CVE-2017-11696 describes a heap-based buffer overflow in the __hash_open function within Mozilla Network Security Services (NSS) library, specifically affecting the lib/dbm/src/hash.c component. This vulnerability allows an attacker to achieve unspecified impact by crafting a malicious cert8.db file. With a CVSS score of 7.8 (High), it presents a significant risk, requiring local access and no user interaction, potentially leading to high confidentiality, integrity, and availability impacts. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.74%
Probability of exploitation in next 30 days
EPSS Percentile
50.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0074 is in the 87th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2017-11696Low

nss: Heap-buffer-overflow in __hash_open

Aug 9, 2017

References

packetstormsecurity.com / files/143735/NSS-Buffer-Overflows-Floating-Point-Exception.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2017/Aug/17
ExploitMailing ListThird Party Advisory
security.gentoo.org / glsa/202003-37
geeknik.net / 9brdqk6xu
ExploitThird Party Advisory
securityfocus.com / bid/100345
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039153
Third Party AdvisoryVDB Entry