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Vulnerability details: VCID-79n7-nh9b-33gc
Vulnerability ID VCID-79n7-nh9b-33gc
Aliases CVE-2021-43303
Summary Buffer overflow in PJSUA API when calling pjsua_call_dump. An attacker-controlled 'buffer' argument may cause a buffer overflow, since supplying an output buffer smaller than 128 characters may overflow the output buffer, regardless of the 'maxlen' argument supplied
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00326 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00391 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
epss 0.00412 https://api.first.org/data/v1/epss?cve=CVE-2021-43303
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-43303
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2021-43303
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-43303
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37706
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43299
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43300
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43301
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43302
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43303
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43804
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43845
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46837
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21722
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21723
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23608
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24763
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24764
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24786
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24792
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-24793
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26498
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26499
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26651
https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9
1014998 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1014998
cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2021-43303 https://nvd.nist.gov/vuln/detail/CVE-2021-43303
USN-6422-1 https://usn.ubuntu.com/6422-1/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43303
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-43303
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.5495
EPSS Score 0.00326
Published At Sept. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:32:14.664298+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/edge/main.json 37.0.0