The DSP card on Cisco TelePresence MCU 4500 and 4501 devices before 4.3(2.30), TelePresence MCU MSE 8510 devices before 4.3(2.30), and TeleP
The DSP card on Cisco TelePresence MCU 4500 and 4501 devices before 4.3(2.30), TelePresence MCU MSE 8510 devices before 4.3(2.30), and TelePresence Server before 2.3(1.55) does not properly validate H.264 data, which allows remote attackers to cause a denial of service (device reload) via crafted RTP packets in a (1) SIP session or (2) H.323 session, aka Bug IDs CSCuc11328 and CSCub05448.
- Published
- Apr 18, 2013
- Updated
- Jun 16, 2026
- EPSS
- 1.2% · 66th percentile
- CWE
- CWE-20
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| cisco | telepresence mcu 4500 series software | cpe:2.3:a:cisco:telepresence_mcu_4500_series_software |
| cisco | telepresence mcu 4505 | cpe:2.3:h:cisco:telepresence_mcu_4505 |
| cisco | telepresence mcu 4510 | cpe:2.3:h:cisco:telepresence_mcu_4510 |
| cisco | telepresence mcu 4515 | cpe:2.3:h:cisco:telepresence_mcu_4515 |
| cisco | telepresence mcu 4520 | cpe:2.3:h:cisco:telepresence_mcu_4520 |
| cisco | telepresence mcu 4501 series software | cpe:2.3:a:cisco:telepresence_mcu_4501_series_software |
| cisco | telepresence mcu 4501 | cpe:2.3:h:cisco:telepresence_mcu_4501 |
| cisco | telepresence mcu mse series software | cpe:2.3:a:cisco:telepresence_mcu_mse_series_software |
| cisco | telepresence mcu mse 8510 | cpe:2.3:h:cisco:telepresence_mcu_mse_8510 |
| cisco | telepresence server software | cpe:2.3:a:cisco:telepresence_server_software |
| cisco | telepresence server 7010 | cpe:2.3:h:cisco:telepresence_server_7010 |
| cisco | telepresence server mse 8710 | cpe:2.3:h:cisco:telepresence_server_mse_8710 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- cisco telepresence mcu 4500 series softwareup to 4.3\(2.18\) inclusive
- cisco telepresence mcu 4500 series software4.1(1.51)
- cisco telepresence mcu 4500 series software4.1(1.59)
- cisco telepresence mcu 4500 series software4.2(1.43)
- cisco telepresence mcu 4500 series software4.2(1.46)
- cisco telepresence mcu 4500 series software4.2(1.50)
- cisco telepresence mcu 4500 series software4.3(1.68)
- cisco telepresence mcu 4501all versions
- cisco telepresence mcu 4501 series softwareup to 4.3\(2.18\) inclusive
- cisco telepresence mcu 4501 series software4.1(1.51)
- cisco telepresence mcu 4501 series software4.1(1.59)
- cisco telepresence mcu 4501 series software4.2(1.43)
- cisco telepresence mcu 4501 series software4.2(1.46)
- cisco telepresence mcu 4501 series software4.2(1.50)
- cisco telepresence mcu 4501 series software4.3(1.68)
- cisco telepresence mcu 4505all versions
- cisco telepresence mcu 4510all versions
- cisco telepresence mcu 4515all versions
- cisco telepresence mcu 4520all versions
- cisco telepresence mcu mse 8510all versions
Same product
cisco: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-0621Cisco TelePresence MCU devices with software 4.5(1.45) allow remote attackers to cause a denial of service (device reload) via an unspecifie32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- C · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- C
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.