Security readout for executives and security teams
CVE-2026-22693 affects HarfBuzz, a widely used text shaping library. In versions before 12.3.0, a failed memory allocation can lead to a crash. The known impact is denial of service, not data theft or code execution. Business urgency is highest where HarfBuzz is exposed through services processing fonts or text at scale. Systems embedding or packaging HarfBuzz versions before 12.3.0 may be exposed. Exposure is most relevant in applications that parse or render text and fonts, including server-side document, graphics, browser, desktop, or UI stacks. Exact downstream affected products are not identified in the provided sources. Treat as a moderate availability risk. Patch during the next regular security maintenance window, faster for exposed services that process untrusted fonts or documents. There is no sourced evidence of exploitation in the wild or confidentiality impact. Mitigation focus: Upgrade HarfBuzz to version 12.3.0 or later.; Identify applications and packages that bundle HarfBuzz below 12.3.0.; Follow operating system and application vendor guidance for packaged HarfBuzz updates..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2026-22693 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-xvjr-f2r9-c7wwCVE reference · x_refsource_CONFIRM
- https://github.com/harfbuzz/harfbuzz/commit/1265ff8d990284f04d8768f35b0e20ae5f60daaeCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.