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-2017-12871

20
FAUCET Score

CVE-2017-12871 describes a medium-severity vulnerability in SimpleSAMLphp versions 1.14.x through 1.14.11, specifically within the aesEncrypt method in lib/SimpleSAML/Utils/Crypto.php. This flaw allows remote attackers to bypass encryption by exploiting the use of the first 16 bytes of the secret key as the initialization vector (IV). The vulnerability has a CVSS score of 5.9, indicating a high impact on confidentiality with high attack complexity and no user interaction required. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.14.0CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.0:*:*:*:*:*:*:*
1.14.1CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.1:*:*:*:*:*:*:*
1.14.2CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.2:*:*:*:*:*:*:*
1.14.3CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.3:*:*:*:*:*:*:*
1.14.4CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.14.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 5th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: simplesamlphp/simplesamlphpFixed in: 1.14.12
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-ww3w-592j-5qrwmedium

SimpleSAMLphp Incorrect IV generation for encryption

May 17, 2022

References

github.com / simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
Issue TrackingPatchThird Party Advisory
simplesamlphp.org / security/201703-02
Issue TrackingPatchThird Party Advisory