CVE-2026-20319 (GCVE-0-2026-20319)
Vulnerability from cvelistv5 – Published: 2026-08-19 16:19 – Updated: 2026-08-19 19:35
VLAI
EPSS
VEX
CVE Program bundle warning
The CVE Program recognizes that this CVE Record provides vulnerability information that a Supplier CNA believes is very important to consumers. The CVE Program has flagged this CVE Record as it assigns a single CVE ID to a collection of individual vulnerabilities which does not align with CVE's "one vulnerability, one ID" principle, and therefore provides incomplete information. For further clarification, please see the CVE Program's blog, "Preserving Vulnerability-Level Identification" linked below. Details within the CNA container below are viewable by clicking on the CNA name.
https://www.cve.org/Media/News/item/blog/2026/06/…Title
Cisco Secure Workload Software Security Hardening Release August 2026 - Buffer Management Vulnerabilities
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20319 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 19:34 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Secure Workload |
Affected:
2.2.1.41
Affected: 3.2.1.18 Affected: 3.3.2.50 Affected: 3.4.1.28 Affected: 3.4.1.34 Affected: 2.3.1.45 Affected: 2.3.1.41 Affected: 3.3.2.28 Affected: 3.1.1.59 Affected: 2.0.2.20 Affected: 2.1.1.33 Affected: 2.1.1.29 Affected: 3.2.1.28 Affected: 3.4.1.35 Affected: 3.1.1.65 Affected: 3.1.1.67 Affected: 2.0.1.34 Affected: 2.3.1.49 Affected: 2.2.1.39 Affected: 3.4.1.19 Affected: 3.3.2.23 Affected: 3.1.1.61 Affected: 3.1.1.54 Affected: 3.5.1.17 Affected: 3.3.2.33 Affected: 3.5.1.1 Affected: 2.3.1.53 Affected: 3.5.1.20 Affected: 3.5.1.30 Affected: 3.3.2.16 Affected: 3.1.1.55 Affected: 3.4.1.6 Affected: 2.3.1.50 Affected: 2.3.1.52 Affected: 3.2.1.19 Affected: 2.2.1.35 Affected: 3.1.1.53 Affected: 3.1.1.70 Affected: 3.2.1.20 Affected: 3.5.1.2 Affected: 1.103.1.12 Affected: 2.3.1.51 Affected: 3.3.2.42 Affected: 3.4.1.1 Affected: 3.3.2.12 Affected: 2.1.1.31 Affected: 3.5.1.23 Affected: 3.3.2.53 Affected: 3.4.1.14 Affected: 3.3.2.2 Affected: 3.4.1.20 Affected: 3.3.2.35 Affected: 2.2.1.34 Affected: 1.102.21 Affected: 3.3.2.5 Affected: 3.5.1.31 Affected: 3.6.1.5 Affected: 3.2.1.31 Affected: 3.5.1.37 Affected: 3.4.1.40 Affected: 3.6.1.17 Affected: 3.6.1.21 Affected: 3.2.1.32 Affected: 3.2.1.33 Affected: 3.6.1.35 Affected: 3.6.1.36 Affected: 3.7.1.5 Affected: 3.6.1.47 Affected: 3.7.1.22 Affected: 3.6.1.52 Affected: 3.7.1.39 Affected: 3.8.1.1 Affected: 3.7.1.51 Affected: 3.8.1.19 Affected: 3.8.1.36 Affected: 3.7.1.59 Affected: 3.8.1.39 Affected: 3.9.1.1 Affected: 3.9.1.10 Affected: 3.9.1.24 Affected: 3.9.1.25 Affected: 3.9.1.28 Affected: 3.9.1.38 Affected: 3.8.1.53 Affected: 3.9.1.52 Affected: 3.10.1.1 Affected: 3.9.1.64 Affected: 3.10.2.11 Affected: 3.9.1.66 Affected: 3.10.3.19 Affected: 3.9.1.69 Affected: 3.10.4.8 Affected: 3.10.5.6 Affected: 4.0.1.1 Affected: 4.0.2.4 Affected: 4.0.2.5 Affected: 3.10.6.3 Affected: 3.10.7.4 Affected: 4.0.3.13 Affected: 4.0.3.17 Affected: 3.10.8.3 |
guessed |
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ion\":\"3.10.7.4\",\"status\":\"affected\"},{\"version\":\"4.0.3.13\",\"status\":\"affected\"},{\"version\":\"4.0.3.17\",\"status\":\"affected\"},{\"version\":\"3.10.8.3\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-19T19:34:22.131347Z\",\"id\":\"CVE-2026-20319\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP\",\"source\":\"psirt@cisco.com\"},{\"url\":\"https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"tags\": [\"x_bundling-flagged-by-CVE-Program\"], \"references\": [{\"url\": \"https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The CVE Program recognizes that this CVE Record provides vulnerability information that a Supplier CNA believes is very important to consumers. The CVE Program has flagged this CVE Record as it assigns a single CVE ID to a collection of individual vulnerabilities which does not align with CVE\u0027s \\\"one vulnerability, one ID\\\" principle, and therefore provides incomplete information. For further clarification, please see the CVE Program\u0027s blog, \\\"Preserving Vulnerability-Level Identification\\\" linked below. Details within the CNA container below are viewable by clicking on the CNA name.\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2026-08-19T18:31:51.184Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20319\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-19T19:34:22.131347Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-19T19:35:29.932Z\"}}], \"cna\": {\"title\": \"Cisco Secure Workload Software Security Hardening Release August 2026 - Buffer Management Vulnerabilities\", \"source\": {\"defects\": [\"CSCwu31108\"], \"advisory\": \"cisco-sa-hardening-csw1-shSvndWP\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"format\": \"cvssV3_1\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"Cisco\", \"product\": \"Cisco Secure Workload\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.2.1.41\"}, {\"status\": \"affected\", \"version\": \"3.2.1.18\"}, {\"status\": \"affected\", \"version\": \"3.3.2.50\"}, {\"status\": \"affected\", \"version\": \"3.4.1.28\"}, {\"status\": \"affected\", \"version\": \"3.4.1.34\"}, {\"status\": \"affected\", \"version\": \"2.3.1.45\"}, {\"status\": \"affected\", \"version\": \"2.3.1.41\"}, {\"status\": \"affected\", \"version\": \"3.3.2.28\"}, {\"status\": \"affected\", \"version\": \"3.1.1.59\"}, {\"status\": \"affected\", \"version\": \"2.0.2.20\"}, {\"status\": \"affected\", \"version\": \"2.1.1.33\"}, {\"status\": \"affected\", \"version\": \"2.1.1.29\"}, {\"status\": \"affected\", \"version\": \"3.2.1.28\"}, {\"status\": \"affected\", \"version\": \"3.4.1.35\"}, {\"status\": \"affected\", \"version\": \"3.1.1.65\"}, {\"status\": \"affected\", \"version\": \"3.1.1.67\"}, {\"status\": \"affected\", \"version\": \"2.0.1.34\"}, {\"status\": \"affected\", \"version\": \"2.3.1.49\"}, {\"status\": \"affected\", \"version\": \"2.2.1.39\"}, {\"status\": \"affected\", \"version\": \"3.4.1.19\"}, {\"status\": \"affected\", \"version\": \"3.3.2.23\"}, {\"status\": \"affected\", \"version\": \"3.1.1.61\"}, {\"status\": \"affected\", \"version\": \"3.1.1.54\"}, {\"status\": \"affected\", \"version\": \"3.5.1.17\"}, {\"status\": \"affected\", \"version\": \"3.3.2.33\"}, {\"status\": \"affected\", \"version\": \"3.5.1.1\"}, {\"status\": \"affected\", \"version\": \"2.3.1.53\"}, {\"status\": \"affected\", \"version\": \"3.5.1.20\"}, {\"status\": \"affected\", \"version\": \"3.5.1.30\"}, {\"status\": \"affected\", \"version\": \"3.3.2.16\"}, {\"status\": \"affected\", \"version\": \"3.1.1.55\"}, {\"status\": \"affected\", \"version\": \"3.4.1.6\"}, {\"status\": \"affected\", \"version\": \"2.3.1.50\"}, {\"status\": \"affected\", \"version\": \"2.3.1.52\"}, {\"status\": \"affected\", \"version\": \"3.2.1.19\"}, {\"status\": \"affected\", \"version\": \"2.2.1.35\"}, {\"status\": \"affected\", \"version\": \"3.1.1.53\"}, {\"status\": \"affected\", \"version\": \"3.1.1.70\"}, {\"status\": \"affected\", \"version\": \"3.2.1.20\"}, {\"status\": \"affected\", \"version\": \"3.5.1.2\"}, {\"status\": \"affected\", \"version\": \"1.103.1.12\"}, {\"status\": \"affected\", \"version\": \"2.3.1.51\"}, {\"status\": \"affected\", \"version\": \"3.3.2.42\"}, {\"status\": \"affected\", \"version\": \"3.4.1.1\"}, {\"status\": \"affected\", \"version\": \"3.3.2.12\"}, {\"status\": \"affected\", \"version\": \"2.1.1.31\"}, {\"status\": \"affected\", \"version\": \"3.5.1.23\"}, {\"status\": \"affected\", \"version\": \"3.3.2.53\"}, {\"status\": \"affected\", \"version\": \"3.4.1.14\"}, {\"status\": \"affected\", \"version\": \"3.3.2.2\"}, {\"status\": \"affected\", \"version\": \"3.4.1.20\"}, {\"status\": \"affected\", \"version\": \"3.3.2.35\"}, {\"status\": \"affected\", \"version\": \"2.2.1.34\"}, {\"status\": \"affected\", \"version\": \"1.102.21\"}, {\"status\": \"affected\", \"version\": \"3.3.2.5\"}, {\"status\": \"affected\", \"version\": \"3.5.1.31\"}, {\"status\": \"affected\", \"version\": \"3.6.1.5\"}, {\"status\": \"affected\", \"version\": \"3.2.1.31\"}, {\"status\": \"affected\", \"version\": \"3.5.1.37\"}, {\"status\": \"affected\", \"version\": \"3.4.1.40\"}, {\"status\": \"affected\", \"version\": \"3.6.1.17\"}, {\"status\": \"affected\", \"version\": \"3.6.1.21\"}, {\"status\": \"affected\", \"version\": \"3.2.1.32\"}, {\"status\": \"affected\", \"version\": \"3.2.1.33\"}, {\"status\": \"affected\", \"version\": \"3.6.1.35\"}, {\"status\": \"affected\", \"version\": \"3.6.1.36\"}, {\"status\": \"affected\", \"version\": \"3.7.1.5\"}, {\"status\": \"affected\", \"version\": \"3.6.1.47\"}, {\"status\": \"affected\", \"version\": \"3.7.1.22\"}, {\"status\": \"affected\", \"version\": \"3.6.1.52\"}, {\"status\": \"affected\", \"version\": \"3.7.1.39\"}, {\"status\": \"affected\", \"version\": \"3.8.1.1\"}, {\"status\": \"affected\", \"version\": \"3.7.1.51\"}, {\"status\": \"affected\", \"version\": \"3.8.1.19\"}, {\"status\": \"affected\", \"version\": \"3.8.1.36\"}, {\"status\": \"affected\", \"version\": \"3.7.1.59\"}, {\"status\": \"affected\", \"version\": \"3.8.1.39\"}, {\"status\": \"affected\", \"version\": \"3.9.1.1\"}, {\"status\": \"affected\", \"version\": \"3.9.1.10\"}, {\"status\": \"affected\", \"version\": \"3.9.1.24\"}, {\"status\": \"affected\", \"version\": \"3.9.1.25\"}, {\"status\": \"affected\", \"version\": \"3.9.1.28\"}, {\"status\": \"affected\", \"version\": \"3.9.1.38\"}, {\"status\": \"affected\", \"version\": \"3.8.1.53\"}, {\"status\": \"affected\", \"version\": \"3.9.1.52\"}, {\"status\": \"affected\", \"version\": \"3.10.1.1\"}, {\"status\": \"affected\", \"version\": \"3.9.1.64\"}, {\"status\": \"affected\", \"version\": \"3.10.2.11\"}, {\"status\": \"affected\", \"version\": \"3.9.1.66\"}, {\"status\": \"affected\", \"version\": \"3.10.3.19\"}, {\"status\": \"affected\", \"version\": \"3.9.1.69\"}, {\"status\": \"affected\", \"version\": \"3.10.4.8\"}, {\"status\": \"affected\", \"version\": \"3.10.5.6\"}, {\"status\": \"affected\", \"version\": \"4.0.1.1\"}, {\"status\": \"affected\", \"version\": \"4.0.2.4\"}, {\"status\": \"affected\", \"version\": \"4.0.2.5\"}, {\"status\": \"affected\", \"version\": \"3.10.6.3\"}, {\"status\": \"affected\", \"version\": \"3.10.7.4\"}, {\"status\": \"affected\", \"version\": \"4.0.3.13\"}, {\"status\": \"affected\", \"version\": \"4.0.3.17\"}, {\"status\": \"affected\", \"version\": \"3.10.8.3\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP\", \"name\": \"cisco-sa-hardening-csw1-shSvndWP\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\\r\\n\\r\\nThe vulnerabilities tracked by CVE-2026-20319 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-119\", \"description\": \"Improper Restriction of Operations within the Bounds of a Memory Buffer\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-08-19T16:19:44.681Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-20319\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-19T19:35:32.543Z\", \"dateReserved\": \"2025-10-08T11:59:15.410Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-08-19T16:19:44.681Z\", \"assignerShortName\": \"cisco\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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