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No exploitation reportedFix available

CVE-2026-14457

No exploitation reported by the sources we read.

  • Published2026-08-25
  • Fixed in4.0.2 · 3.6.4 · 3.5.8 · 3.4.7
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the private key (with no associated certificate) configured locally, a NULL pointer dereference may occur when the remote peer solicits raw public keys and also sends the typically omitted "signature_algorithms_cert" TLS extension. Impact summary: The impact is limited to a possible Denial of Service as a result of an application abort, no data disclosure or remote command execution are possible. CWE: CWE-476: NULL Pointer Dereference Description: While a passing comment in sample code in the documentation suggests that key-only RPK configurations are supported, the best-practice RPK configuration is to always configure a corresponding certificate (possibly self-signed or signed by any convenient CA). When the private key is configured along with a matching certificate, the "signature_algorithms_cert" extension is handled reliably even without the fix, and peer clients or servers that don't support raw public keys may be able to complete a TLS connection by pinning or verifying the corresponding certificate or its public key. Deployments that prefer to configure just a private key with no certificate need to upgrade to an updated release as noted below. FIPS impact: no No FIPS modules are affected by this issue, as the SSL protocol implementation is outside the OpenSSL FIPS module boundary.

Timeline

dates in UTC
  1. 2026-08-2513:17CVE publishedNVD

Versions per branch

NVD
OpenSSL
BranchAffectedFixed in
4.0≥ 4.0.0, < 4.0.24.0.2
3.6≥ 3.6.0, < 3.6.43.6.4
3.5≥ 3.5.0, < 3.5.83.5.8
3.4≥ 3.4.0, < 3.4.73.4.7

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As openssl, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • OpenSSLother versions: not affected
    Affected
    • ≥ 4.0.0, < 4.0.2fixed in 4.0.2semver
    • ≥ 3.6.0, < 3.6.4fixed in 3.6.4semver
    • ≥ 3.5.0, < 3.5.8fixed in 3.5.8semver
    • ≥ 3.4.0, < 3.4.7fixed in 3.4.7semver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-25

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • edk2Ubuntu:26.10all versions · no fixed version listedand 1 other package
  • edk2Ubuntu:26.04:LTSall versions · no fixed version listedand 1 other package
  • miniforge3CleanStartall versions · fixed in 26.1.1.3-r2
  • miniforge3CleanStartall versions · fixed in 26.3.2.0-r2
  • miniforge3CleanStartall versions · fixed in 26.3.2.3-r3
  • nodejsUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • nodejsUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • opensslUbuntu:26.04:LTSall versions · fixed in 3.5.5-1ubuntu3.4

41 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-14457 Red Hat Product Security145 products fixed · 17 known affected

    openssl: RPK server signature algorithm selection can dereference a missing certificate

    rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub 1 · edk2-aarch64 as a component of Red Hat Enterprise Linux 10 · edk2-ovmf as a component of Red Hat Enterprise Linux 10 · +14 more

  • RHSA-2026:72476 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1

  • RHSA-2026:72475 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1

  • RHSA-2026:72470 Red Hat Product Security8 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1

  • RHSA-2026:72399 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1

  • RHSA-2026:72395 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.20.1

7 more advisories

Full record on NVD

Fix

  1. Update OpenSSL to 4.0.2 · 3.6.4 · 3.5.8 · 3.4.7
  2. Vendor fix Red Hat Product Security RHSA-2026:72476 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. The steps to apply the upgraded images are different depending on the installation plan approval policy you used when installing the cert-manager Operator for Red Hat OpenShift. - If t…
  3. Vendor fix Red Hat Product Security RHSA-2026:71603 · 3 productsThe container images provided by this release, apart from the installer, should be deployed using rhui-installer utility. See the official documentation for more details.
  4. Vendor fix Red Hat Product Security RHSA-2026:67165 · 49 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  5. Vendor fix Red Hat Product Security RHSA-2026:59641 · 15 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  6. Workaround from the vendor Red Hat Product Security RHSA-2026:72476 · 4 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-08-25
Last Modified
2026-09-11
NVD status
Analyzed
GitHub Advisory
GHSA-6m2h-7hrp-6jw8

Frequently asked questions

What is CVE-2026-14457?

Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the private key (with no associated certificate) configured locally, a NULL pointer dereference may occur when the remote peer solicits raw public keys and also sends the typically omitted "signature_algorithms_cert" TLS extension. Impact summary: The impact is limited to a possible Denial of Service as a result of an application abort, no data disclosure or remote command execution are possible. CWE: CWE-476: NULL Pointer Dereference Description: While a passing comment in sample code in the documentation suggests that key-only RPK configurations are supported, the best-practice RPK configuration is to always configure a corresponding certificate (possibly self-signed or signed by any convenient CA). When the private key is configured along with a matching certificate, the "signature_algorithms_cert" extension is handled reliably even without the fix, and peer clients or servers that don't support raw public keys may be able to complete a TLS connection by pinning or verifying the corresponding certificate or its public key. Deployments that prefer to configure just a private key with no certificate need to upgrade to an updated release as noted below. FIPS impact: no No FIPS modules are affected by this issue, as the SSL protocol implementation is outside the OpenSSL FIPS module boundary.

Is CVE-2026-14457 actively exploited?

Active exploitation of CVE-2026-14457 has not been confirmed. Its EPSS score was 1.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-14457?

CVE-2026-14457 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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