Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2019-12312

25
FAUCET Score

CVE-2019-12312 is a denial-of-service vulnerability affecting Libreswan version 3.27. An unauthenticated attacker can trigger a NULL pointer dereference in the pluto IKE daemon by sending a crafted sequence of IKEv2 messages, leading to a restart of the service. This vulnerability has a CVSSv3 score of 7.5 (High), indicating it can be exploited remotely with low complexity to cause a high impact on availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.28CPE matchmatch criteria
cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.75%
Probability of exploitation in next 30 days
EPSS Percentile
84.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0275 is in the 73rd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libreswan-0:3.29-6.el8
View patch

Vendor Advisories (1)

redhatCVE-2019-12312Moderate

libreswan: null-pointer dereference by sending two IKEv2 packets

May 12, 2019

References

github.com / libreswan/libreswan/compare/9b1394e...3897683
PatchThird Party Advisory
github.com / libreswan/libreswan/issues/246
Third Party Advisory
libreswan.org / security/CVE-2019-12312/CVE-2019-12312.txt
libreswan.org / security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch
iwantacve.cn / index.php/archives/218
ExploitThird Party Advisory