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VulnerabilityPublished Updated

CVE-2026-31278: supremainc BioStar 2 · Cleartext Transmission

Affects supremainc BioStar 2Source CVE Database V5

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Not known to be exploited · CVSS 7.7 High : upgrade to 2.9.12 soon.

Data as of 29 Oct 2026, 10:09 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.9.12
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade supremainc BioStar 2 to 2.9.12.

Affected software

ProductAffectedFixed in
supremaincBioStar 2Affected
  • <2.9.12
Fixed in
  • 2.9.12

AI-suggested

If you cannot patch yet, restrict access to the vulnerable endpoint and monitor for suspicious GET requests targeting /api/v2/setting/adserversetting. Consider isolating or limiting the use of affected versions to reduce exposure.

Description

An issue in the /api/v2/setting/adserversetting endpoint of Suprema BioStar 2 before 2.9.12 and and BioStar X before 1.0.2 allows attackers to obtain Active Directory service account credentials in cleartext by supplying a crafted GET request.

References

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