CVE-2019-12243 json
Istio may not check inbound TCP connections against istio-policy
published 2019-06-05 7 y ago modified 2026-06-17 4 mo ago also GHSA-6g5f-f5pm-mjrg , EUVD-2022-0859
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
Istio 1.1.x through 1.1.6 has Incorrect Access Control.
Patch / fix
Exploit prediction
1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- istio.io https://istio.io/blog/2019/cve-2019-12243/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.4 | AV:A/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:H/RL:O/RC:C |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | istio.io/istio | >=1.1.0, <1.1.7 |
1.1.7 |
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/istio/istio/pull/13893/commits/91faba277439dab798185730d1624bd53e37bb06
web
-
istio.io
/blog/2019/cve-2019-12243/
exploit, vendor-advisory
-
istio.io
/about/notes/
release-notes, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-12243
advisory
-
github.com
/istio/istio/issues/13868
web
-
istio.io
/blog/2019/cve-2019-12243
web
Sources
- CVE List CVE-2019-12243
- GitHub Advisory GHSA-6g5f-f5pm-mjrg
- NVD CVE-2019-12243
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