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CVE-2023-27596

24
FAUCET Score

CVE-2023-27596 is a denial-of-service vulnerability affecting OpenSIPS versions prior to 3.1.8 and 3.2.5. An unauthenticated attacker can crash the OpenSIPS server by repeatedly sending a specially crafted, malformed Session Description Protocol (SDP) body to configurations utilizing the stream_process function. This vulnerability has a CVSS score of 7.5 (High), indicating a high impact on availability with no confidentiality or integrity impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.1.8CPE matchmatch criteria
cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*
>= 3.2.0, < 3.2.5CPE matchmatch criteria
cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.74%
Probability of exploitation in next 30 days
EPSS Percentile
50.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0074 is in the 26th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / OpenSIPS/opensips/commit/dd051f8ed5ae3347fb1d556ced3c97822c9d8450
PatchThird Party Advisory
github.com / OpenSIPS/opensips/security/advisories/GHSA-3ghx-j39m-cw4f
Third Party Advisory