CVE-2026-57159
published 2026-09-04CVE-2026-57159: PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the…
PriorityP343high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.60%
47.8th percentile
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is disabled, so default builds are not affected; the feature is an interoperability option that integrating products may enable. This issue has been patched via commit 673b978.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| pjsip | pjproject | < 673b978aab1fe3ab874247be32c871acc880cbeb | 673b978aab1fe3ab874247be32c871acc880cbeb |
| teluu | pjsip | <= 2.17 | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.4HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
bugzilla·2026-09-09·CVSS 8.4
CVE-2026-57159 [HIGH] CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can c
Bugzilla
CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
bugzilla·2026-09-09·CVSS 8.4
CVE-2026-57159 [HIGH] CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
CVE-2026-57159 asterisk: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can
Bugzilla
CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
bugzilla·2026-09-09·CVSS 8.4
CVE-2026-57159 [HIGH] CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can
Bugzilla
CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
bugzilla·2026-09-09·CVSS 8.4
CVE-2026-57159 [HIGH] CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
CVE-2026-57159 pjproject: SDP parser out-of-bounds write in remote payload-type map maintenance [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP ca
Bugzilla
CVE-2026-57159 pjsip: SDP parser out-of-bounds write in remote payload-type map maintenance
bugzilla·2026-09-04·CVSS 8.4
CVE-2026-57159 [HIGH] CVE-2026-57159 pjsip: SDP parser out-of-bounds write in remote payload-type map maintenance
CVE-2026-57159 pjsip: SDP parser out-of-bounds write in remote payload-type map maintenance
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is
2026-09-04
Published