PatchTheCVECVE-2019-12997: In Loopchain through 2.2.1.3, an attacker can escalate privileges from a low-privilege shell by changing the e
CVE-2019-12997 is a high-severity flaw (CVSS 8.8) affecting loopchain. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In Loopchain through 2.2.1.3, an attacker can escalate privileges from a low-privilege shell by changing the environment (aka injection in the DEFAULT_SCORE_HOST environment variable).
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 2.0% (top 19%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2019-06-28 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-12997?
loopchain: upgrade to newer than 2.2.1.3. Exact commands for each OS are on this page.
Is CVE-2019-12997 being exploited?
CVE-2019-12997 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-12997 affect?
CVE-2019-12997 affects loopchain. Severity is high (CVSS 8.8). In Loopchain through 2.2.1.3, an attacker can escalate privileges from a low-privilege shell by changing the environment (aka injection in the DEFAULT_SCORE_HOST environment variable).
How urgent is CVE-2019-12997?
Priority 56/100. High severity; Public exploit reference