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CVE-2019-19726

46
FAUCET Score

CVE-2019-19726 is a local privilege escalation vulnerability affecting OpenBSD through version 6.6. It allows a local user to gain root privileges by manipulating the RLIMIT_DATA resource limit, causing the dynamic loader to fail in stripping LD_LIBRARY_PATH from setuid programs like chpass or passwd. This vulnerability carries a high CVSS score of 7.8, indicating a low attack complexity and the potential for complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, public exploit code is available, including a Metasploit module, and it has garnered significant community discussion and media coverage, suggesting a heightened risk of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.6CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
3.52%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: OpenBSD Dynamic Loader chpass Privilege Escalation · Dec 11, 2019
ExploitDB: EDB-47803 · Dec 30, 2019
This CVE's current EPSS score of 0.0352 is in the 98th 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

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

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/155658/Qualys-Security-Advisory-OpenBSD-Dynamic-Loader-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/155764/OpenBSD-Dynamic-Loader-chpass-Privilege-Escalation.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/174986/glibc-ld.so-Local-Privilege-Escalation.html
seclists.org / fulldisclosure/2019/Dec/31
ExploitMailing ListThird Party Advisory
seclists.org / fulldisclosure/2023/Oct/11
seclists.org / bugtraq/2019/Dec/25
ExploitMailing ListThird Party Advisory
openbsd.org / errata66.html
PatchVendor Advisory
openwall.com / lists/oss-security/2019/12/11/9
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2023/10/03/2