CVE-2026-22795

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-01-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS#12 file.

Impact summary: An application processing a malformed PKCS#12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service.

A type confusion vulnerability exists in PKCS#12 parsing code where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid pointer read.

The location is constrained to a 1-byte address space, meaning any attempted pointer manipulation can only target addresses between 0x00 and 0xFF. This range corresponds to the zero page, which is unmapped on most modern operating systems and will reliably result in a crash, leading only to a Denial of Service. Exploiting this issue also requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For these reasons, the issue was assessed as Low severity.

The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the PKCS12 implementation is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue.

OpenSSL 1.0.2 is not affected by this issue.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
4.1%
KEV
Not listed

Published

January 27, 2026

Last Modified

May 12, 2026

References (7)

Vendor Advisories for CVE-2026-22795(6)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopenssl (1.0.2g-1ubuntu4.20+esm14) @ xenial2026-06-08ubuntu
ubuntuopenssl-provider-legacy (3.5.3-1ubuntu3) @ questing2026-06-08ubuntu
redhatopenssl-main-3.5.6-0.1.hum12026-04-09redhat
redhatrhui5/rhua-rhel9:17736701372026-03-18redhat
redhatcostmanagement/costmanagement-metrics-rhel9-operator:17708363492026-02-24redhat
redhatrhui5/installer-rhel9:17706469252026-02-11redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17707404052026-02-10redhat
redhatdiscovery/discovery-ui-rhel9:17691117742026-02-02redhat
redhatopenssl-1:3.5.1-7.el10_12026-01-28redhat
redhatopenssl-1:3.5.1-7.el9_72026-01-28redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(4)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
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  6. 2026-07-13 14:08 UTCOSV refresh
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  1. 2026-06-28 14:07 UTCEPSS rescore
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  6. 2026-06-25 13:49 UTCEPSS rescore
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  8. 2026-06-25 11:01 UTCOSV refresh
  9. 2026-06-24 14:05 UTCEPSS rescore
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  33. 2026-06-08 02:30 UTCEG score recompute
  34. 2026-06-08 02:30 UTCVendor advisory
  35. 2026-06-08 02:30 UTCGHSA enrichment
  36. 2026-06-07 15:25 UTCEPSS rescore
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  38. 2026-06-06 13:47 UTCEPSS rescore
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  44. 2026-06-04 13:12 UTCEPSS rescore
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  47. 2026-06-02 20:13 UTCEPSS rescore
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  49. 2026-06-01 16:27 UTCOSV refresh
  50. 2026-06-01 13:51 UTCEPSS rescore
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  72. 2026-05-21 22:43 UTCEPSS rescore
  73. 2026-05-20 23:58 UTCEG score recompute
  74. 2026-05-20 23:58 UTCVendor advisory
  75. 2026-05-20 23:58 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-22795?
CVE-2026-22795 is a medium vulnerability published on January 27, 2026. Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS#12 file. Impact summary: An application processing a malformed PKCS#12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service. A type…
When was CVE-2026-22795 disclosed?
CVE-2026-22795 was first published in the National Vulnerability Database on January 27, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22795 actively exploited?
CVE-2026-22795 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-22795?
CVE-2026-22795 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-22795?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22795, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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