Answer in brief
CVE-2026-43964 records a Low severity (CVSS 3.7) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Postfix/Postfix (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Postfix/Postfix (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Postfix/Postfixgeneric | >=2.3 <3.8.16 || >=3.9 <3.9.10 || >=3.10 <3.10.9 | 3.8.16, 3.9.10, 3.10.9 |
Published upstream
May 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-43964 records a Low severity (CVSS 3.7) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Postfix/Postfix (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Postfix/Postfix (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Postfix/Postfixgeneric | >=2.3 <3.8.16 || >=3.9 <3.9.10 || >=3.10 <3.10.9 | 3.8.16, 3.9.10, 3.10.9 |
Published upstream
May 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.
Quoted source text, attributed separately from HOL analysis.