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CVE-2019-11834

31
FAUCET Score

CVE-2019-11834 is a critical out-of-bounds access vulnerability affecting cJSON versions prior to 1.7.11, specifically related to the handling of null characters in string literals. This flaw impacts products such as davegamble cjson and Oracle TimesTen In-Memory Database. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over a network with low attack complexity. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.11CPE matchmatch criteria
cpe:2.3:a:davegamble:cjson:*:*:*:*:*:*:*:*
< 18.1.3.1.0CPE matchmatch criteria
cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 73rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Patch Available

Vendor Patches (9)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 16928-17084Fixed in: 1.7.0-2
microsoftpatch availablevia msrc
Product: 16928-16817Fixed in: 1.7.0-2
microsoftpatch availablevia msrc
Product: 19666-17084Fixed in: 18.2.2-1
microsoftpatch availablevia msrc
Product: azl3 libglvnd 1.7.0-2 on Azure Linux 3.0Fixed in: 1.7.0-2
microsoftpatch availablevia msrc
Product: azl3 ceph 18.2.2-8 on Azure Linux 3.0Fixed in: 18.2.2-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 1.7.0-2
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 1.7.0-2
oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (2)

microsoft2024-Jun/CVE-2019-11834

CVE-2019-11834

Jun 11, 2024
microsoft2019-May/CVE-2019-11834Critical

cJSON before 1.7.11 allows out-of-bounds access related to \x00 in a string literal.

May 14, 2019

References

github.com / DaveGamble/cJSON/compare/c69134d...93688cb
PatchThird Party Advisory
github.com / DaveGamble/cJSON/issues/337
ExploitThird Party Advisory
github.com / DaveGamble/cJSON/releases/tag/v1.7.11
Release NotesThird Party Advisory
oracle.com / security-alerts/cpuoct2020.html
PatchThird Party Advisory