CVE-2026-119148: Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersona

Q: How do I fix CVE-2026-119148?

aws-nitro-enclaves-sdk-c: upgrade to 0.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-119148 being exploited?

CVE-2026-119148 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-119148 affect?

CVE-2026-119148 affects aws-nitro-enclaves-sdk-c. Severity is medium (CVSS 6.5). Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersonate the AWS KMS endpoint. To remediate this issue, users should rebuild any custom enclave image against aws-nitro-enclaves-sdk-

Q: How urgent is CVE-2026-119148?

Priority 28/100. On your watchlist

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-119148 is a medium-severity flaw (CVSS 6.5) affecting aws-nitro-enclaves-sdk-c. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersonate the AWS KMS endpoint. To remediate this issue, users should rebuild any custom enclave image against aws-nitro-enclaves-sdk-c 0.4.6.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-807
Published	2026-10-30
Last modified	2026-10-30

Publisher (CNA): AMZN · Vendor: aws · Source: CVE Program record (NVD analysis pending)

Last updated 2026-10-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-30 16:12 UTCPublished CVE record published
2026-10-30 16:14 UTCUpdated Record last modified

aws aws-nitro-enclaves-sdk-c UPGRADE

Affected: < 0.4.6

Fixed in: 0.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy aws-nitro-enclaves-sdk-c || rpm -q aws-nitro-enclaves-sdk-c || aws-nitro-enclaves-sdk-c --version

2. UPGRADE to 0.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade aws-nitro-enclaves-sdk-c

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade aws-nitro-enclaves-sdk-c

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Official advisories

AWS Security Bulletins: CVE-2026-119116 and CVE-2026-119148 - Issues in AWS Nitro Enclaves SDK for C 2026-10-30

Research and news

VulDB Recent Entries: CVE-2026-119148 | AWS aws-nitro-enclaves-sdk-c up to 0.4.5 input validation 2026-10-30

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2026-119148?

aws-nitro-enclaves-sdk-c: upgrade to 0.4.6. Exact commands for each OS are on this page.

Is CVE-2026-119148 being exploited?

CVE-2026-119148 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-2026-119148 affect?

CVE-2026-119148 affects aws-nitro-enclaves-sdk-c. Severity is medium (CVSS 6.5). Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersonate the AWS KMS endpoint. To remediate this issue, users should rebuild any custom enclave image against aws-nitro-enclaves-sdk-

How urgent is CVE-2026-119148?

Priority 28/100. On your watchlist

Software pages

AWS vulnerabilities

References

← Back to latest CVEs