{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2019-1983 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-1983 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-1983 is a high-severity denial of service vulnerability in Cisco Asyncos, published on 23 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-1983 and fix it if it is affected.\n\nWhat it is: CVE-2019-1983 is a high-severity denial of service vulnerability in Cisco Asyncos, published on 23 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2019-1983 in the wild and no public exploit code.\n\nAffected product: Cisco Asyncos. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2019-1983/ (Markdown: https://insights.sbomify.com/CVE-2019-1983/index.md)","id":"CVE-2019-1983","markdown":"https://insights.sbomify.com/CVE-2019-1983/index.md","name":"CVE-2019-1983","record":{"aliases":["GHSA-v6r4-c6r4-r649"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco Email Security Appliance","requires_auth":"none","summary":"Unauthenticated remote attackers can cause repeated process crashes and service unavailability on Cisco ESA and SMA devices by sending emails with crafted attachments.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"asyncos","vendor":"cisco"},{"product":"content_security_management_appliance","vendor":"cisco"},{"product":"email_security_appliance","vendor":"cisco"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) and Cisco Content Security Management Appliance (SMA) could allow an unauthenticated, remote attacker to cause repeated crashes in some internal processes that are running on the affected devices, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation of email attachments. An attacker could exploit this vulnerability by sending an email message with a crafted attachment through an affected device. A successful exploit could allow the attacker to cause specific processes to crash repeatedly, resulting in the complete unavailability of both the Cisco Advanced Malware Protection (AMP) and message tracking features and in severe performance degradation while processing email. After the affected processes restart, the software resumes filtering for the same attachment, causing the affected processes to crash and restart again. A successful exploit could also allow the attacker to cause a repeated DoS condition. Manual intervention may be required to recover from this situation.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Cisco Email Security Appliance and Cisco Content Security Management Appliance Denial of Service Vulnerability","id":"CVE-2019-1983","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"cisco:asyncos","products":["cisco:asyncos","cisco:email_security_appliance"],"type":"denial_of_service","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Enterprise Network Functions Virtualization Infrastructure Software Arbitrary File Write Vulnerability","id":"CVE-2019-1984"},"packages":[],"prev":{"headline":"Cisco Firepower Threat Defense Software HTTP Filtering Bypass Vulnerability","id":"CVE-2019-1982"},"products":["Cisco Email Security Appliance (ESA)"],"published":"2020-09-23","related":[{"cvss_score":10,"headline":"Cisco Multiple Products Improper Input Validation","id":"CVE-2025-20393","kev_date_added":"2025-12-17","published":"2025-12-17"},{"cvss_score":9.8,"headline":"Cisco Secure Email Gateway Relative Path Traversal","id":"CVE-2026-76519","kev_date_added":"2026-10-14","published":"2026-10-14"},{"cvss_score":9.8,"headline":"Cisco Secure Email Gateway SQL Injection","id":"CVE-2026-76461","kev_date_added":"2026-09-14","published":"2026-09-14"},{"cvss_score":8.8,"headline":"Command injection in Cisco Secure Web Appliance","id":"CVE-2024-20435","kev_date_added":null,"published":"2024-07-17"},{"cvss_score":8.8,"headline":"Cisco Web Security Appliance Unauthorized Device Reset Vulnerability","id":"CVE-2019-15956","kev_date_added":null,"published":"2019-11-26"},{"cvss_score":8.6,"headline":"Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability","id":"CVE-2021-34698","kev_date_added":null,"published":"2021-10-06"},{"cvss_score":8.6,"headline":"Cisco Email Security Appliance Denial of Service Vulnerability","id":"CVE-2019-1947","kev_date_added":null,"published":"2020-09-23"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-11-13","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can cause repeated process crashes and service unavailability on Cisco ESA and SMA devices by sending emails with crafted attachments.","url":"https://insights.sbomify.com/CVE-2019-1983/"}