CVE•Published 2026-04-21•Modified 2026-04-23•1 article on news•6 live references•NVD data
CVE-2026-40892Pjsip · Pjsip
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.
Timeline
Published 2026-04-21
Modified 2026-04-23
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40892Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Pjsip Pjsip"All exposed Pjsip Pjsip instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Pjsip"HTTP body or banner mentions "Pjsip" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-40892Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40892Censys host search filtered to this CVE id.
grep.app
CVE-2026-40892Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40892GitHub code search for direct mentions.
Google dork
"CVE-2026-40892" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-40892 on GitHub.