Security readout for executives and security teams
Plain-English summary
CVE-2022-35066 is a heap buffer overflow reported in OTFCC's otfccdump at commit 617837b. The main documented impact is availability loss, meaning a crafted input could crash processing. The supplied sources do not identify a fixed version, vendor advisory, or active exploitation.
Executive priority
Treat this as a moderate operational resilience issue. Prioritize teams that process externally supplied fonts or run automated font conversion pipelines. The business risk is service disruption, not confirmed breach risk, based on the supplied sources.
Technical view
The CVE describes CWE-787 out-of-bounds write behavior in /release-x64/otfccdump+0x6e41b8 for OTFCC commit 617837b. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges, user interaction required, unchanged scope, and high availability impact only.
Likely exposure
Exposure is most likely where OTFCC or otfccdump is used to process fonts or related files, especially from untrusted sources. The source bundle lists no vendor, product CPE, package version range, or deployment context, so asset matching requires local inventory confirmation.
Exploitation context
The CVE is not listed as KEV in the supplied data. A public GitHub PoC reference is cited, but the bundle does not provide evidence of active exploitation. User interaction is required under the CVSS vector, and impact is documented as denial of service rather than data compromise.
Researcher notes
Evidence is thin: affected vendor/product fields are n/a, no CPEs are provided, and no fix is named. The strongest technical anchors are CWE-787, OTFCC commit 617837b, otfccdump offset detail, CVSS availability impact, and the public PoC reference.
Mitigation direction
- Inventory OTFCC and otfccdump use across build, design, and processing systems.
- Check upstream OTFCC guidance for fixed commits or replacement recommendations.
- Avoid processing untrusted font files until exposure is understood.
- Run font processing in sandboxed, resource-limited environments.
- Remove or isolate vulnerable tooling where business need is low.
Validation and detection
- Search SBOMs, repositories, images, and workstations for OTFCC or otfccdump.
- Confirm whether any found build matches commit 617837b.
- Identify workflows that accept external or user-supplied font files.
- Review crash handling, sandboxing, and resource limits for affected processing paths.
- Track vendor or upstream issue history for fixed-version evidence.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-35066 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://drive.google.com/file/d/1zUk2e65kK-htzApaQZguAQgT6nqq4S7J/view?usp=sharingCVE reference · x_refsource_MISC
- https://github.com/Cvjark/Poc/blob/main/otfcc/CVE-2022-35066.mdCVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.